GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/Makefile

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2017 Rockchip Electronics Co., Ltd
+#
+
+obj-y += clk_pll.o
+obj-$(CONFIG_ROCKCHIP_PX30) += clk_px30.o
+obj-$(CONFIG_ROCKCHIP_RK3036) += clk_rk3036.o
+obj-$(CONFIG_ROCKCHIP_RK3128) += clk_rk3128.o
+obj-$(CONFIG_ROCKCHIP_RK3188) += clk_rk3188.o
+obj-$(CONFIG_ROCKCHIP_RK322X) += clk_rk322x.o
+obj-$(CONFIG_ROCKCHIP_RK3288) += clk_rk3288.o
+obj-$(CONFIG_ROCKCHIP_RK3308) += clk_rk3308.o
+obj-$(CONFIG_ROCKCHIP_RK3328) += clk_rk3328.o
+obj-$(CONFIG_ROCKCHIP_RK3368) += clk_rk3368.o
+obj-$(CONFIG_ROCKCHIP_RK3399) += clk_rk3399.o
+obj-$(CONFIG_ROCKCHIP_RV1108) += clk_rv1108.o

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/clk_pll.c

@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2018-2019 Rockchip Electronics Co., Ltd
+ */
+ #include <common.h>
+#include <bitfield.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <div64.h>
+
+static struct rockchip_pll_rate_table rockchip_auto_table;
+
+#define PLL_MODE_MASK				0x3
+#define PLL_RK3328_MODE_MASK			0x1
+
+#define RK3036_PLLCON0_FBDIV_MASK		0xfff
+#define RK3036_PLLCON0_FBDIV_SHIFT		0
+#define RK3036_PLLCON0_POSTDIV1_MASK		0x7 << 12
+#define RK3036_PLLCON0_POSTDIV1_SHIFT		12
+#define RK3036_PLLCON1_REFDIV_MASK		0x3f
+#define RK3036_PLLCON1_REFDIV_SHIFT		0
+#define RK3036_PLLCON1_POSTDIV2_MASK		0x7 << 6
+#define RK3036_PLLCON1_POSTDIV2_SHIFT		6
+#define RK3036_PLLCON1_DSMPD_MASK		0x1 << 12
+#define RK3036_PLLCON1_DSMPD_SHIFT		12
+#define RK3036_PLLCON2_FRAC_MASK		0xffffff
+#define RK3036_PLLCON2_FRAC_SHIFT		0
+#define RK3036_PLLCON1_PWRDOWN_SHIT		13
+
+#define MHZ		1000000
+#define KHZ		1000
+enum {
+	OSC_HZ			= 24 * 1000000,
+	VCO_MAX_HZ	= 3200U * 1000000,
+	VCO_MIN_HZ	= 800 * 1000000,
+	OUTPUT_MAX_HZ	= 3200U * 1000000,
+	OUTPUT_MIN_HZ	= 24 * 1000000,
+};
+
+#define MIN_FOUTVCO_FREQ	(800 * MHZ)
+#define MAX_FOUTVCO_FREQ	(2000 * MHZ)
+
+int gcd(int m, int n)
+{
+	int t;
+
+	while (m > 0) {
+		if (n > m) {
+			t = m;
+			m = n;
+			n = t;
+		} /* swap */
+		m -= n;
+	}
+	return n;
+}
+
+/*
+ * How to calculate the PLL(from TRM V0.3 Part 1 Page 63):
+ * Formulas also embedded within the Fractional PLL Verilog model:
+ * If DSMPD = 1 (DSM is disabled, "integer mode")
+ * FOUTVCO = FREF / REFDIV * FBDIV
+ * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2
+ * Where:
+ * FOUTVCO = Fractional PLL non-divided output frequency
+ * FOUTPOSTDIV = Fractional PLL divided output frequency
+ *               (output of second post divider)
+ * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input)
+ * REFDIV = Fractional PLL input reference clock divider
+ * FBDIV = Integer value programmed into feedback divide
+ *
+ */
+
+static int rockchip_pll_clk_set_postdiv(ulong fout_hz,
+					u32 *postdiv1,
+					u32 *postdiv2,
+					u32 *foutvco)
+{
+	ulong freq;
+
+	if (fout_hz < MIN_FOUTVCO_FREQ) {
+		for (*postdiv1 = 1; *postdiv1 <= 7; (*postdiv1)++) {
+			for (*postdiv2 = 1; *postdiv2 <= 7; (*postdiv2)++) {
+				freq = fout_hz * (*postdiv1) * (*postdiv2);
+				if (freq >= MIN_FOUTVCO_FREQ &&
+				    freq <= MAX_FOUTVCO_FREQ) {
+					*foutvco = freq;
+					return 0;
+				}
+			}
+		}
+		printf("Can't FIND postdiv1/2 to make fout=%lu in 800~2000M.\n",
+		       fout_hz);
+	} else {
+		*postdiv1 = 1;
+		*postdiv2 = 1;
+	}
+	return 0;
+}
+
+static struct rockchip_pll_rate_table *
+rockchip_pll_clk_set_by_auto(ulong fin_hz,
+			     ulong fout_hz)
+{
+	struct rockchip_pll_rate_table *rate_table = &rockchip_auto_table;
+	/* FIXME set postdiv1/2 always 1*/
+	u32 foutvco = fout_hz;
+	ulong fin_64, frac_64;
+	u32 f_frac, postdiv1, postdiv2;
+	ulong clk_gcd = 0;
+
+	if (fin_hz == 0 || fout_hz == 0 || fout_hz == fin_hz)
+		return NULL;
+
+	rockchip_pll_clk_set_postdiv(fout_hz, &postdiv1, &postdiv2, &foutvco);
+	rate_table->postdiv1 = postdiv1;
+	rate_table->postdiv2 = postdiv2;
+	rate_table->dsmpd = 1;
+
+	if (fin_hz / MHZ * MHZ == fin_hz && fout_hz / MHZ * MHZ == fout_hz) {
+		fin_hz /= MHZ;
+		foutvco /= MHZ;
+		clk_gcd = gcd(fin_hz, foutvco);
+		rate_table->refdiv = fin_hz / clk_gcd;
+		rate_table->fbdiv = foutvco / clk_gcd;
+
+		rate_table->frac = 0;
+
+		debug("fin = %ld, fout = %ld, clk_gcd = %ld,\n",
+		      fin_hz, fout_hz, clk_gcd);
+		debug("refdiv= %d,fbdiv= %d,postdiv1= %d,postdiv2= %d\n",
+		      rate_table->refdiv,
+		      rate_table->fbdiv, rate_table->postdiv1,
+		      rate_table->postdiv2);
+	} else {
+		debug("frac div,fin_hz = %ld,fout_hz = %ld\n",
+		      fin_hz, fout_hz);
+		debug("frac get postdiv1 = %d,  postdiv2 = %d, foutvco = %d\n",
+		      rate_table->postdiv1, rate_table->postdiv2, foutvco);
+		clk_gcd = gcd(fin_hz / MHZ, foutvco / MHZ);
+		rate_table->refdiv = fin_hz / MHZ / clk_gcd;
+		rate_table->fbdiv = foutvco / MHZ / clk_gcd;
+		debug("frac get refdiv = %d,  fbdiv = %d\n",
+		      rate_table->refdiv, rate_table->fbdiv);
+
+		rate_table->frac = 0;
+
+		f_frac = (foutvco % MHZ);
+		fin_64 = fin_hz;
+		fin_64 = fin_64 / rate_table->refdiv;
+		frac_64 = f_frac << 24;
+		frac_64 = frac_64 / fin_64;
+		rate_table->frac = frac_64;
+		if (rate_table->frac > 0)
+			rate_table->dsmpd = 0;
+		debug("frac = %x\n", rate_table->frac);
+	}
+	return rate_table;
+}
+
+static const struct rockchip_pll_rate_table *
+rockchip_get_pll_settings(struct rockchip_pll_clock *pll, ulong rate)
+{
+	struct rockchip_pll_rate_table  *rate_table = pll->rate_table;
+
+	while (rate_table->rate) {
+		if (rate_table->rate == rate)
+			break;
+		rate_table++;
+	}
+	if (rate_table->rate != rate)
+		return rockchip_pll_clk_set_by_auto(24 * MHZ, rate);
+	else
+		return rate_table;
+}
+
+static int rk3036_pll_set_rate(struct rockchip_pll_clock *pll,
+			       void __iomem *base, ulong pll_id,
+			       ulong drate)
+{
+	const struct rockchip_pll_rate_table *rate;
+
+	rate = rockchip_get_pll_settings(pll, drate);
+	if (!rate) {
+		printf("%s unsupport rate\n", __func__);
+		return -EINVAL;
+	}
+
+	debug("%s: rate settings for %lu fbdiv: %d, postdiv1: %d, refdiv: %d\n",
+	      __func__, rate->rate, rate->fbdiv, rate->postdiv1, rate->refdiv);
+	debug("%s: rate settings for %lu postdiv2: %d, dsmpd: %d, frac: %d\n",
+	      __func__, rate->rate, rate->postdiv2, rate->dsmpd, rate->frac);
+
+	/*
+	 * When power on or changing PLL setting,
+	 * we must force PLL into slow mode to ensure output stable clock.
+	 */
+	rk_clrsetreg(base + pll->mode_offset,
+		     pll->mode_mask << pll->mode_shift,
+		     RKCLK_PLL_MODE_SLOW << pll->mode_shift);
+
+	/* Power down */
+	rk_setreg(base + pll->con_offset + 0x4,
+		  1 << RK3036_PLLCON1_PWRDOWN_SHIT);
+
+	rk_clrsetreg(base + pll->con_offset,
+		     (RK3036_PLLCON0_POSTDIV1_MASK |
+		     RK3036_PLLCON0_FBDIV_MASK),
+		     (rate->postdiv1 << RK3036_PLLCON0_POSTDIV1_SHIFT) |
+		     rate->fbdiv);
+	rk_clrsetreg(base + pll->con_offset + 0x4,
+		     (RK3036_PLLCON1_POSTDIV2_MASK |
+		     RK3036_PLLCON1_REFDIV_MASK),
+		     (rate->postdiv2 << RK3036_PLLCON1_POSTDIV2_SHIFT |
+		     rate->refdiv << RK3036_PLLCON1_REFDIV_SHIFT));
+	if (!rate->dsmpd) {
+		rk_clrsetreg(base + pll->con_offset + 0x4,
+			     RK3036_PLLCON1_DSMPD_MASK,
+			     rate->dsmpd << RK3036_PLLCON1_DSMPD_SHIFT);
+		writel((readl(base + pll->con_offset + 0x8) &
+			(~RK3036_PLLCON2_FRAC_MASK)) |
+			    (rate->frac << RK3036_PLLCON2_FRAC_SHIFT),
+			    base + pll->con_offset + 0x8);
+	}
+
+	/* Power Up */
+	rk_clrreg(base + pll->con_offset + 0x4,
+		  1 << RK3036_PLLCON1_PWRDOWN_SHIT);
+
+	/* waiting for pll lock */
+	while (!(readl(base + pll->con_offset + 0x4) & (1 << pll->lock_shift)))
+		udelay(1);
+
+	rk_clrsetreg(base + pll->mode_offset, pll->mode_mask << pll->mode_shift,
+		     RKCLK_PLL_MODE_NORMAL << pll->mode_shift);
+	debug("PLL at %p: con0=%x con1= %x con2= %x mode= %x\n",
+	      pll, readl(base + pll->con_offset),
+	      readl(base + pll->con_offset + 0x4),
+	      readl(base + pll->con_offset + 0x8),
+	      readl(base + pll->mode_offset));
+
+	return 0;
+}
+
+static ulong rk3036_pll_get_rate(struct rockchip_pll_clock *pll,
+				 void __iomem *base, ulong pll_id)
+{
+	u32 refdiv, fbdiv, postdiv1, postdiv2, dsmpd, frac;
+	u32 con = 0, shift, mask;
+	ulong rate;
+
+	con = readl(base + pll->mode_offset);
+	shift = pll->mode_shift;
+	mask = pll->mode_mask << shift;
+
+	switch ((con & mask) >> shift) {
+	case RKCLK_PLL_MODE_SLOW:
+		return OSC_HZ;
+	case RKCLK_PLL_MODE_NORMAL:
+		/* normal mode */
+		con = readl(base + pll->con_offset);
+		postdiv1 = (con & RK3036_PLLCON0_POSTDIV1_MASK) >>
+			   RK3036_PLLCON0_POSTDIV1_SHIFT;
+		fbdiv = (con & RK3036_PLLCON0_FBDIV_MASK) >>
+			RK3036_PLLCON0_FBDIV_SHIFT;
+		con = readl(base + pll->con_offset + 0x4);
+		postdiv2 = (con & RK3036_PLLCON1_POSTDIV2_MASK) >>
+			   RK3036_PLLCON1_POSTDIV2_SHIFT;
+		refdiv = (con & RK3036_PLLCON1_REFDIV_MASK) >>
+			 RK3036_PLLCON1_REFDIV_SHIFT;
+		dsmpd = (con & RK3036_PLLCON1_DSMPD_MASK) >>
+			RK3036_PLLCON1_DSMPD_SHIFT;
+		con = readl(base + pll->con_offset + 0x8);
+		frac = (con & RK3036_PLLCON2_FRAC_MASK) >>
+			RK3036_PLLCON2_FRAC_SHIFT;
+		rate = (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
+		if (dsmpd == 0) {
+			u64 frac_rate = OSC_HZ * (u64)frac;
+
+			do_div(frac_rate, refdiv);
+			frac_rate >>= 24;
+			do_div(frac_rate, postdiv1);
+			do_div(frac_rate, postdiv1);
+			rate += frac_rate;
+		}
+		return rate;
+	case RKCLK_PLL_MODE_DEEP:
+	default:
+		return 32768;
+	}
+}
+
+ulong rockchip_pll_get_rate(struct rockchip_pll_clock *pll,
+			    void __iomem *base,
+			    ulong pll_id)
+{
+	ulong rate = 0;
+
+	switch (pll->type) {
+	case pll_rk3036:
+		pll->mode_mask = PLL_MODE_MASK;
+		rate = rk3036_pll_get_rate(pll, base, pll_id);
+		break;
+	case pll_rk3328:
+		pll->mode_mask = PLL_RK3328_MODE_MASK;
+		rate = rk3036_pll_get_rate(pll, base, pll_id);
+		break;
+	default:
+		printf("%s: Unknown pll type for pll clk %ld\n",
+		       __func__, pll_id);
+	}
+	return rate;
+}
+
+int rockchip_pll_set_rate(struct rockchip_pll_clock *pll,
+			  void __iomem *base, ulong pll_id,
+			  ulong drate)
+{
+	int ret = 0;
+
+	if (rockchip_pll_get_rate(pll, base, pll_id) == drate)
+		return 0;
+
+	switch (pll->type) {
+	case pll_rk3036:
+		pll->mode_mask = PLL_MODE_MASK;
+		ret = rk3036_pll_set_rate(pll, base, pll_id, drate);
+		break;
+	case pll_rk3328:
+		pll->mode_mask = PLL_RK3328_MODE_MASK;
+		ret = rk3036_pll_set_rate(pll, base, pll_id, drate);
+		break;
+	default:
+		printf("%s: Unknown pll type for pll clk %ld\n",
+		       __func__, pll_id);
+	}
+	return ret;
+}
+
+const struct rockchip_cpu_rate_table *
+rockchip_get_cpu_settings(struct rockchip_cpu_rate_table *cpu_table,
+			  ulong rate)
+{
+	struct rockchip_cpu_rate_table *ps = cpu_table;
+
+	while (ps->rate) {
+		if (ps->rate == rate)
+			break;
+		ps++;
+	}
+	if (ps->rate != rate)
+		return NULL;
+	else
+		return ps;
+}
+

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/clk_rk3036.c

@@ -0,0 +1,379 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2015 Google, Inc
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3036.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rk3036-cru.h>
+#include <linux/log2.h>
+
+enum {
+	VCO_MAX_HZ	= 2400U * 1000000,
+	VCO_MIN_HZ	= 600 * 1000000,
+	OUTPUT_MAX_HZ	= 2400U * 1000000,
+	OUTPUT_MIN_HZ	= 24 * 1000000,
+};
+
+#define RATE_TO_DIV(input_rate, output_rate) \
+	((input_rate) / (output_rate) - 1);
+
+#define DIV_TO_RATE(input_rate, div)	((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
+	.refdiv = _refdiv,\
+	.fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
+	.postdiv1 = _postdiv1, .postdiv2 = _postdiv2};\
+	_Static_assert(((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ) *\
+			 OSC_HZ / (_refdiv * _postdiv1 * _postdiv2) == hz,\
+			 #hz "Hz cannot be hit with PLL "\
+			 "divisors on line " __stringify(__LINE__));
+
+/* use integer mode*/
+static const struct pll_div apll_init_cfg = PLL_DIVISORS(APLL_HZ, 1, 3, 1);
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
+
+static int rkclk_set_pll(struct rk3036_cru *cru, enum rk_clk_id clk_id,
+			 const struct pll_div *div)
+{
+	int pll_id = rk_pll_id(clk_id);
+	struct rk3036_pll *pll = &cru->pll[pll_id];
+
+	/* All PLLs have same VCO and output frequency range restrictions. */
+	uint vco_hz = OSC_HZ / 1000 * div->fbdiv / div->refdiv * 1000;
+	uint output_hz = vco_hz / div->postdiv1 / div->postdiv2;
+
+	debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, postdiv2=%d,\
+		 vco=%u Hz, output=%u Hz\n",
+			pll, div->fbdiv, div->refdiv, div->postdiv1,
+			div->postdiv2, vco_hz, output_hz);
+	assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
+	       output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ);
+
+	/* use integer mode */
+	rk_setreg(&pll->con1, 1 << PLL_DSMPD_SHIFT);
+
+	rk_clrsetreg(&pll->con0,
+		     PLL_POSTDIV1_MASK | PLL_FBDIV_MASK,
+		     (div->postdiv1 << PLL_POSTDIV1_SHIFT) | div->fbdiv);
+	rk_clrsetreg(&pll->con1, PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
+		     (div->postdiv2 << PLL_POSTDIV2_SHIFT |
+		     div->refdiv << PLL_REFDIV_SHIFT));
+
+	/* waiting for pll lock */
+	while (readl(&pll->con1) & (1 << PLL_LOCK_STATUS_SHIFT))
+		udelay(1);
+
+	return 0;
+}
+
+static void rkclk_init(struct rk3036_cru *cru)
+{
+	u32 aclk_div;
+	u32 hclk_div;
+	u32 pclk_div;
+
+	/* pll enter slow-mode */
+	rk_clrsetreg(&cru->cru_mode_con,
+		     GPLL_MODE_MASK | APLL_MODE_MASK,
+		     GPLL_MODE_SLOW << GPLL_MODE_SHIFT |
+		     APLL_MODE_SLOW << APLL_MODE_SHIFT);
+
+	/* init pll */
+	rkclk_set_pll(cru, CLK_ARM, &apll_init_cfg);
+	rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
+
+	/*
+	 * select apll as cpu/core clock pll source and
+	 * set up dependent divisors for PERI and ACLK clocks.
+	 * core hz : apll = 1:1
+	 */
+	aclk_div = APLL_HZ / CORE_ACLK_HZ - 1;
+	assert((aclk_div + 1) * CORE_ACLK_HZ == APLL_HZ && aclk_div < 0x7);
+
+	pclk_div = APLL_HZ / CORE_PERI_HZ - 1;
+	assert((pclk_div + 1) * CORE_PERI_HZ == APLL_HZ && pclk_div < 0xf);
+
+	rk_clrsetreg(&cru->cru_clksel_con[0],
+		     CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK,
+		     CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
+		     0 << CORE_DIV_CON_SHIFT);
+
+	rk_clrsetreg(&cru->cru_clksel_con[1],
+		     CORE_ACLK_DIV_MASK | CORE_PERI_DIV_MASK,
+		     aclk_div << CORE_ACLK_DIV_SHIFT |
+		     pclk_div << CORE_PERI_DIV_SHIFT);
+
+	/*
+	 * select apll as pd_bus bus clock source and
+	 * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+	 */
+	aclk_div = GPLL_HZ / BUS_ACLK_HZ - 1;
+	assert((aclk_div + 1) * BUS_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f);
+
+	pclk_div = GPLL_HZ / BUS_PCLK_HZ - 1;
+	assert((pclk_div + 1) * BUS_PCLK_HZ == GPLL_HZ && pclk_div <= 0x7);
+
+	hclk_div = GPLL_HZ / BUS_HCLK_HZ - 1;
+	assert((hclk_div + 1) * BUS_HCLK_HZ == GPLL_HZ && hclk_div <= 0x3);
+
+	rk_clrsetreg(&cru->cru_clksel_con[0],
+		     BUS_ACLK_PLL_SEL_MASK | BUS_ACLK_DIV_MASK,
+		     BUS_ACLK_PLL_SEL_GPLL << BUS_ACLK_PLL_SEL_SHIFT |
+		     aclk_div << BUS_ACLK_DIV_SHIFT);
+
+	rk_clrsetreg(&cru->cru_clksel_con[1],
+		     BUS_PCLK_DIV_MASK | BUS_HCLK_DIV_MASK,
+		     pclk_div << BUS_PCLK_DIV_SHIFT |
+		     hclk_div << BUS_HCLK_DIV_SHIFT);
+
+	/*
+	 * select gpll as pd_peri bus clock source and
+	 * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+	 */
+	aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1;
+	assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
+
+	hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ);
+	assert((1 << hclk_div) * PERI_HCLK_HZ ==
+		PERI_ACLK_HZ && (hclk_div < 0x4));
+
+	pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ);
+	assert((1 << pclk_div) * PERI_PCLK_HZ ==
+		PERI_ACLK_HZ && pclk_div < 0x8);
+
+	rk_clrsetreg(&cru->cru_clksel_con[10],
+		     PERI_PLL_SEL_MASK | PERI_PCLK_DIV_MASK |
+		     PERI_HCLK_DIV_MASK | PERI_ACLK_DIV_MASK,
+		     PERI_PLL_GPLL << PERI_PLL_SEL_SHIFT |
+		     pclk_div << PERI_PCLK_DIV_SHIFT |
+		     hclk_div << PERI_HCLK_DIV_SHIFT |
+		     aclk_div << PERI_ACLK_DIV_SHIFT);
+
+	/* PLL enter normal-mode */
+	rk_clrsetreg(&cru->cru_mode_con,
+		     GPLL_MODE_MASK | APLL_MODE_MASK,
+		     GPLL_MODE_NORM << GPLL_MODE_SHIFT |
+		     APLL_MODE_NORM << APLL_MODE_SHIFT);
+}
+
+/* Get pll rate by id */
+static uint32_t rkclk_pll_get_rate(struct rk3036_cru *cru,
+				   enum rk_clk_id clk_id)
+{
+	uint32_t refdiv, fbdiv, postdiv1, postdiv2;
+	uint32_t con;
+	int pll_id = rk_pll_id(clk_id);
+	struct rk3036_pll *pll = &cru->pll[pll_id];
+	static u8 clk_shift[CLK_COUNT] = {
+		0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, 0xff,
+		GPLL_MODE_SHIFT, 0xff
+	};
+	static u32 clk_mask[CLK_COUNT] = {
+		0xffffffff, APLL_MODE_MASK, DPLL_MODE_MASK, 0xffffffff,
+		GPLL_MODE_MASK, 0xffffffff
+	};
+	uint shift;
+	uint mask;
+
+	con = readl(&cru->cru_mode_con);
+	shift = clk_shift[clk_id];
+	mask = clk_mask[clk_id];
+
+	switch ((con & mask) >> shift) {
+	case GPLL_MODE_SLOW:
+		return OSC_HZ;
+	case GPLL_MODE_NORM:
+
+		/* normal mode */
+		con = readl(&pll->con0);
+		postdiv1 = (con & PLL_POSTDIV1_MASK) >> PLL_POSTDIV1_SHIFT;
+		fbdiv = (con & PLL_FBDIV_MASK) >> PLL_FBDIV_SHIFT;
+		con = readl(&pll->con1);
+		postdiv2 = (con & PLL_POSTDIV2_MASK) >> PLL_POSTDIV2_SHIFT;
+		refdiv = (con & PLL_REFDIV_MASK) >> PLL_REFDIV_SHIFT;
+		return (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
+	case GPLL_MODE_DEEP:
+	default:
+		return 32768;
+	}
+}
+
+static ulong rockchip_mmc_get_clk(struct rk3036_cru *cru, uint clk_general_rate,
+				  int periph)
+{
+	uint src_rate;
+	uint div, mux;
+	u32 con;
+
+	switch (periph) {
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+		con = readl(&cru->cru_clksel_con[12]);
+		mux = (con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT;
+		div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT;
+		break;
+	case HCLK_SDIO:
+	case SCLK_SDIO:
+		con = readl(&cru->cru_clksel_con[12]);
+		mux = (con & MMC0_PLL_MASK) >> MMC0_PLL_SHIFT;
+		div = (con & MMC0_DIV_MASK) >> MMC0_DIV_SHIFT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	src_rate = mux == EMMC_SEL_24M ? OSC_HZ : clk_general_rate;
+	return DIV_TO_RATE(src_rate, div) / 2;
+}
+
+static ulong rockchip_mmc_set_clk(struct rk3036_cru *cru, uint clk_general_rate,
+				  int periph, uint freq)
+{
+	int src_clk_div;
+	int mux;
+
+	debug("%s: clk_general_rate=%u\n", __func__, clk_general_rate);
+
+	/* mmc clock auto divide 2 in internal */
+	src_clk_div = DIV_ROUND_UP(clk_general_rate / 2, freq);
+
+	if (src_clk_div > 128) {
+		src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, freq);
+		assert(src_clk_div - 1 < 128);
+		mux = EMMC_SEL_24M;
+	} else {
+		mux = EMMC_SEL_GPLL;
+	}
+
+	switch (periph) {
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+		rk_clrsetreg(&cru->cru_clksel_con[12],
+			     EMMC_PLL_MASK | EMMC_DIV_MASK,
+			     mux << EMMC_PLL_SHIFT |
+			     (src_clk_div - 1) << EMMC_DIV_SHIFT);
+		break;
+	case HCLK_SDIO:
+	case SCLK_SDIO:
+		rk_clrsetreg(&cru->cru_clksel_con[11],
+			     MMC0_PLL_MASK | MMC0_DIV_MASK,
+			     mux << MMC0_PLL_SHIFT |
+			     (src_clk_div - 1) << MMC0_DIV_SHIFT);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return rockchip_mmc_get_clk(cru, clk_general_rate, periph);
+}
+
+static ulong rk3036_clk_get_rate(struct clk *clk)
+{
+	struct rk3036_clk_priv *priv = dev_get_priv(clk->dev);
+
+	switch (clk->id) {
+	case 0 ... 63:
+		return rkclk_pll_get_rate(priv->cru, clk->id);
+	default:
+		return -ENOENT;
+	}
+}
+
+static ulong rk3036_clk_set_rate(struct clk *clk, ulong rate)
+{
+	struct rk3036_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong new_rate, gclk_rate;
+
+	gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
+	switch (clk->id) {
+	case 0 ... 63:
+		return 0;
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+		new_rate = rockchip_mmc_set_clk(priv->cru, gclk_rate,
+						clk->id, rate);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return new_rate;
+}
+
+static struct clk_ops rk3036_clk_ops = {
+	.get_rate	= rk3036_clk_get_rate,
+	.set_rate	= rk3036_clk_set_rate,
+};
+
+static int rk3036_clk_ofdata_to_platdata(struct udevice *dev)
+{
+	struct rk3036_clk_priv *priv = dev_get_priv(dev);
+
+	priv->cru = dev_read_addr_ptr(dev);
+
+	return 0;
+}
+
+static int rk3036_clk_probe(struct udevice *dev)
+{
+	struct rk3036_clk_priv *priv = dev_get_priv(dev);
+
+	rkclk_init(priv->cru);
+
+	return 0;
+}
+
+static int rk3036_clk_bind(struct udevice *dev)
+{
+	int ret;
+	struct udevice *sys_child;
+	struct sysreset_reg *priv;
+
+	/* The reset driver does not have a device node, so bind it here */
+	ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
+				 &sys_child);
+	if (ret) {
+		debug("Warning: No sysreset driver: ret=%d\n", ret);
+	} else {
+		priv = malloc(sizeof(struct sysreset_reg));
+		priv->glb_srst_fst_value = offsetof(struct rk3036_cru,
+						    cru_glb_srst_fst_value);
+		priv->glb_srst_snd_value = offsetof(struct rk3036_cru,
+						    cru_glb_srst_snd_value);
+		sys_child->priv = priv;
+	}
+
+#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
+	ret = offsetof(struct rk3036_cru, cru_softrst_con[0]);
+	ret = rockchip_reset_bind(dev, ret, 9);
+	if (ret)
+		debug("Warning: software reset driver bind faile\n");
+#endif
+
+	return 0;
+}
+
+static const struct udevice_id rk3036_clk_ids[] = {
+	{ .compatible = "rockchip,rk3036-cru" },
+	{ }
+};
+
+U_BOOT_DRIVER(rockchip_rk3036_cru) = {
+	.name		= "clk_rk3036",
+	.id		= UCLASS_CLK,
+	.of_match	= rk3036_clk_ids,
+	.priv_auto_alloc_size = sizeof(struct rk3036_clk_priv),
+	.ofdata_to_platdata = rk3036_clk_ofdata_to_platdata,
+	.ops		= &rk3036_clk_ops,
+	.bind		= rk3036_clk_bind,
+	.probe		= rk3036_clk_probe,
+};

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/clk_rk3128.c

@@ -0,0 +1,602 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2017 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3128.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <bitfield.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rk3128-cru.h>
+#include <linux/log2.h>
+
+enum {
+	VCO_MAX_HZ	= 2400U * 1000000,
+	VCO_MIN_HZ	= 600 * 1000000,
+	OUTPUT_MAX_HZ	= 2400U * 1000000,
+	OUTPUT_MIN_HZ	= 24 * 1000000,
+};
+
+#define DIV_TO_RATE(input_rate, div)	((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
+	.refdiv = _refdiv,\
+	.fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
+	.postdiv1 = _postdiv1, .postdiv2 = _postdiv2};
+
+/* use integer mode*/
+static const struct pll_div apll_init_cfg = PLL_DIVISORS(APLL_HZ, 1, 3, 1);
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
+
+static int rkclk_set_pll(struct rk3128_cru *cru, enum rk_clk_id clk_id,
+			 const struct pll_div *div)
+{
+	int pll_id = rk_pll_id(clk_id);
+	struct rk3128_pll *pll = &cru->pll[pll_id];
+
+	/* All PLLs have same VCO and output frequency range restrictions. */
+	uint vco_hz = OSC_HZ / 1000 * div->fbdiv / div->refdiv * 1000;
+	uint output_hz = vco_hz / div->postdiv1 / div->postdiv2;
+
+	debug("PLL at %p:fd=%d,rd=%d,pd1=%d,pd2=%d,vco=%uHz,output=%uHz\n",
+	      pll, div->fbdiv, div->refdiv, div->postdiv1,
+	      div->postdiv2, vco_hz, output_hz);
+	assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
+	       output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ);
+
+	/* use integer mode */
+	rk_setreg(&pll->con1, 1 << PLL_DSMPD_SHIFT);
+	/* Power down */
+	rk_setreg(&pll->con1, 1 << PLL_PD_SHIFT);
+
+	rk_clrsetreg(&pll->con0,
+		     PLL_POSTDIV1_MASK | PLL_FBDIV_MASK,
+		     (div->postdiv1 << PLL_POSTDIV1_SHIFT) | div->fbdiv);
+	rk_clrsetreg(&pll->con1, PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
+		     (div->postdiv2 << PLL_POSTDIV2_SHIFT |
+		     div->refdiv << PLL_REFDIV_SHIFT));
+
+	/* Power Up */
+	rk_clrreg(&pll->con1, 1 << PLL_PD_SHIFT);
+
+	/* waiting for pll lock */
+	while (readl(&pll->con1) & (1 << PLL_LOCK_STATUS_SHIFT))
+		udelay(1);
+
+	return 0;
+}
+
+static int pll_para_config(u32 freq_hz, struct pll_div *div)
+{
+	u32 ref_khz = OSC_HZ / 1000, refdiv, fbdiv = 0;
+	u32 postdiv1, postdiv2 = 1;
+	u32 fref_khz;
+	u32 diff_khz, best_diff_khz;
+	const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16;
+	const u32 max_postdiv1 = 7, max_postdiv2 = 7;
+	u32 vco_khz;
+	u32 freq_khz = freq_hz / 1000;
+
+	if (!freq_hz) {
+		printf("%s: the frequency can't be 0 Hz\n", __func__);
+		return -1;
+	}
+
+	postdiv1 = DIV_ROUND_UP(VCO_MIN_HZ / 1000, freq_khz);
+	if (postdiv1 > max_postdiv1) {
+		postdiv2 = DIV_ROUND_UP(postdiv1, max_postdiv1);
+		postdiv1 = DIV_ROUND_UP(postdiv1, postdiv2);
+	}
+
+	vco_khz = freq_khz * postdiv1 * postdiv2;
+
+	if (vco_khz < (VCO_MIN_HZ / 1000) || vco_khz > (VCO_MAX_HZ / 1000) ||
+	    postdiv2 > max_postdiv2) {
+		printf("%s: Cannot find out a supported VCO for Freq (%uHz)\n",
+		       __func__, freq_hz);
+		return -1;
+	}
+
+	div->postdiv1 = postdiv1;
+	div->postdiv2 = postdiv2;
+
+	best_diff_khz = vco_khz;
+	for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) {
+		fref_khz = ref_khz / refdiv;
+
+		fbdiv = vco_khz / fref_khz;
+		if ((fbdiv >= max_fbdiv) || (fbdiv <= min_fbdiv))
+			continue;
+		diff_khz = vco_khz - fbdiv * fref_khz;
+		if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) {
+			fbdiv++;
+			diff_khz = fref_khz - diff_khz;
+		}
+
+		if (diff_khz >= best_diff_khz)
+			continue;
+
+		best_diff_khz = diff_khz;
+		div->refdiv = refdiv;
+		div->fbdiv = fbdiv;
+	}
+
+	if (best_diff_khz > 4 * (1000)) {
+		printf("%s: Failed to match output frequency %u bestis %u Hz\n",
+		       __func__, freq_hz,
+		       best_diff_khz * 1000);
+		return -1;
+	}
+	return 0;
+}
+
+static void rkclk_init(struct rk3128_cru *cru)
+{
+	u32 aclk_div;
+	u32 hclk_div;
+	u32 pclk_div;
+
+	/* pll enter slow-mode */
+	rk_clrsetreg(&cru->cru_mode_con,
+		     GPLL_MODE_MASK | APLL_MODE_MASK,
+		     GPLL_MODE_SLOW << GPLL_MODE_SHIFT |
+		     APLL_MODE_SLOW << APLL_MODE_SHIFT);
+
+	/* init pll */
+	rkclk_set_pll(cru, CLK_ARM, &apll_init_cfg);
+	rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
+
+	/*
+	 * select apll as cpu/core clock pll source and
+	 * set up dependent divisors for PERI and ACLK clocks.
+	 * core hz : apll = 1:1
+	 */
+	aclk_div = APLL_HZ / CORE_ACLK_HZ - 1;
+	assert((aclk_div + 1) * CORE_ACLK_HZ == APLL_HZ && aclk_div < 0x7);
+
+	pclk_div = APLL_HZ / CORE_PERI_HZ - 1;
+	assert((pclk_div + 1) * CORE_PERI_HZ == APLL_HZ && pclk_div < 0xf);
+
+	rk_clrsetreg(&cru->cru_clksel_con[0],
+		     CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK,
+		     CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
+		     0 << CORE_DIV_CON_SHIFT);
+
+	rk_clrsetreg(&cru->cru_clksel_con[1],
+		     CORE_ACLK_DIV_MASK | CORE_PERI_DIV_MASK,
+		     aclk_div << CORE_ACLK_DIV_SHIFT |
+		     pclk_div << CORE_PERI_DIV_SHIFT);
+
+	/*
+	 * select gpll as pd_bus bus clock source and
+	 * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+	 */
+	aclk_div = GPLL_HZ / BUS_ACLK_HZ - 1;
+	assert((aclk_div + 1) * BUS_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f);
+
+	pclk_div = BUS_ACLK_HZ / BUS_PCLK_HZ - 1;
+	assert((pclk_div + 1) * BUS_PCLK_HZ == BUS_ACLK_HZ && pclk_div <= 0x7);
+
+	hclk_div = BUS_ACLK_HZ / BUS_HCLK_HZ - 1;
+	assert((hclk_div + 1) * BUS_HCLK_HZ == BUS_ACLK_HZ && hclk_div <= 0x3);
+
+	rk_clrsetreg(&cru->cru_clksel_con[0],
+		     BUS_ACLK_PLL_SEL_MASK | BUS_ACLK_DIV_MASK,
+		     BUS_ACLK_PLL_SEL_GPLL << BUS_ACLK_PLL_SEL_SHIFT |
+		     aclk_div << BUS_ACLK_DIV_SHIFT);
+
+	rk_clrsetreg(&cru->cru_clksel_con[1],
+		     BUS_PCLK_DIV_MASK | BUS_HCLK_DIV_MASK,
+		     pclk_div << BUS_PCLK_DIV_SHIFT |
+		     hclk_div << BUS_HCLK_DIV_SHIFT);
+
+	/*
+	 * select gpll as pd_peri bus clock source and
+	 * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+	 */
+	aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1;
+	assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
+
+	hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ);
+	assert((1 << hclk_div) * PERI_HCLK_HZ ==
+		PERI_ACLK_HZ && (hclk_div < 0x4));
+
+	pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ);
+	assert((1 << pclk_div) * PERI_PCLK_HZ ==
+		PERI_ACLK_HZ && pclk_div < 0x8);
+
+	rk_clrsetreg(&cru->cru_clksel_con[10],
+		     PERI_PLL_SEL_MASK | PERI_PCLK_DIV_MASK |
+		     PERI_HCLK_DIV_MASK | PERI_ACLK_DIV_MASK,
+		     PERI_PLL_GPLL << PERI_PLL_SEL_SHIFT |
+		     pclk_div << PERI_PCLK_DIV_SHIFT |
+		     hclk_div << PERI_HCLK_DIV_SHIFT |
+		     aclk_div << PERI_ACLK_DIV_SHIFT);
+
+	/* PLL enter normal-mode */
+	rk_clrsetreg(&cru->cru_mode_con,
+		     GPLL_MODE_MASK | APLL_MODE_MASK | CPLL_MODE_MASK,
+		     GPLL_MODE_NORM << GPLL_MODE_SHIFT |
+		     APLL_MODE_NORM << APLL_MODE_SHIFT |
+		     CPLL_MODE_NORM << CPLL_MODE_SHIFT);
+
+	/*fix NAND controller  working clock max to 150Mhz */
+	rk_clrsetreg(&cru->cru_clksel_con[2],
+		     NANDC_PLL_SEL_MASK | NANDC_CLK_DIV_MASK,
+		     NANDC_PLL_SEL_GPLL << NANDC_PLL_SEL_SHIFT |
+		     3 << NANDC_CLK_DIV_SHIFT);
+}
+
+/* Get pll rate by id */
+static u32 rkclk_pll_get_rate(struct rk3128_cru *cru,
+			      enum rk_clk_id clk_id)
+{
+	u32 refdiv, fbdiv, postdiv1, postdiv2;
+	u32 con;
+	int pll_id = rk_pll_id(clk_id);
+	struct rk3128_pll *pll = &cru->pll[pll_id];
+	static u8 clk_shift[CLK_COUNT] = {
+		0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, CPLL_MODE_SHIFT,
+		GPLL_MODE_SHIFT, 0xff
+	};
+	static u32 clk_mask[CLK_COUNT] = {
+		0xff, APLL_MODE_MASK, DPLL_MODE_MASK, CPLL_MODE_MASK,
+		GPLL_MODE_MASK, 0xff
+	};
+	uint shift;
+	uint mask;
+
+	con = readl(&cru->cru_mode_con);
+	shift = clk_shift[clk_id];
+	mask = clk_mask[clk_id];
+
+	switch ((con & mask) >> shift) {
+	case GPLL_MODE_SLOW:
+		return OSC_HZ;
+	case GPLL_MODE_NORM:
+		/* normal mode */
+		con = readl(&pll->con0);
+		postdiv1 = (con & PLL_POSTDIV1_MASK) >> PLL_POSTDIV1_SHIFT;
+		fbdiv = (con & PLL_FBDIV_MASK) >> PLL_FBDIV_SHIFT;
+		con = readl(&pll->con1);
+		postdiv2 = (con & PLL_POSTDIV2_MASK) >> PLL_POSTDIV2_SHIFT;
+		refdiv = (con & PLL_REFDIV_MASK) >> PLL_REFDIV_SHIFT;
+		return (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
+	case GPLL_MODE_DEEP:
+	default:
+		return 32768;
+	}
+}
+
+static ulong rockchip_mmc_get_clk(struct rk3128_cru *cru, uint clk_general_rate,
+				  int periph)
+{
+	uint src_rate;
+	uint div, mux;
+	u32 con;
+
+	switch (periph) {
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+	case SCLK_EMMC_SAMPLE:
+		con = readl(&cru->cru_clksel_con[12]);
+		mux = (con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT;
+		div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT;
+		break;
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		con = readl(&cru->cru_clksel_con[11]);
+		mux = (con & MMC0_PLL_MASK) >> MMC0_PLL_SHIFT;
+		div = (con & MMC0_DIV_MASK) >> MMC0_DIV_SHIFT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	src_rate = mux == EMMC_SEL_24M ? OSC_HZ : clk_general_rate;
+	return DIV_TO_RATE(src_rate, div);
+}
+
+static ulong rockchip_mmc_set_clk(struct rk3128_cru *cru, uint clk_general_rate,
+				  int periph, uint freq)
+{
+	int src_clk_div;
+	int mux;
+
+	debug("%s: clk_general_rate=%u\n", __func__, clk_general_rate);
+
+	/* mmc clock defaulg div 2 internal, need provide double in cru */
+	src_clk_div = DIV_ROUND_UP(clk_general_rate / 2, freq);
+
+	if (src_clk_div > 128) {
+		src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, freq);
+		mux = EMMC_SEL_24M;
+	} else {
+		mux = EMMC_SEL_GPLL;
+	}
+
+	switch (periph) {
+	case HCLK_EMMC:
+		rk_clrsetreg(&cru->cru_clksel_con[12],
+			     EMMC_PLL_MASK | EMMC_DIV_MASK,
+			     mux << EMMC_PLL_SHIFT |
+			     (src_clk_div - 1) << EMMC_DIV_SHIFT);
+		break;
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		rk_clrsetreg(&cru->cru_clksel_con[11],
+			     MMC0_PLL_MASK | MMC0_DIV_MASK,
+			     mux << MMC0_PLL_SHIFT |
+			     (src_clk_div - 1) << MMC0_DIV_SHIFT);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return rockchip_mmc_get_clk(cru, clk_general_rate, periph);
+}
+
+static ulong rk3128_peri_get_pclk(struct rk3128_cru *cru, ulong clk_id)
+{
+	u32 div, con;
+
+	switch (clk_id) {
+	case PCLK_I2C0:
+	case PCLK_I2C1:
+	case PCLK_I2C2:
+	case PCLK_I2C3:
+	case PCLK_PWM:
+		con = readl(&cru->cru_clksel_con[10]);
+		div = con >> 12 & 0x3;
+		break;
+	default:
+		printf("do not support this peripheral bus\n");
+		return -EINVAL;
+	}
+
+	return DIV_TO_RATE(PERI_ACLK_HZ, div);
+}
+
+static ulong rk3128_peri_set_pclk(struct rk3128_cru *cru, ulong clk_id, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = PERI_ACLK_HZ / hz;
+	assert(src_clk_div - 1 < 4);
+
+	switch (clk_id) {
+	case PCLK_I2C0:
+	case PCLK_I2C1:
+	case PCLK_I2C2:
+	case PCLK_I2C3:
+	case PCLK_PWM:
+		rk_setreg(&cru->cru_clksel_con[10],
+			  ((src_clk_div - 1) << 12));
+		break;
+	default:
+		printf("do not support this peripheral bus\n");
+		return -EINVAL;
+	}
+
+	return DIV_TO_RATE(PERI_ACLK_HZ, src_clk_div);
+}
+
+static ulong rk3128_saradc_get_clk(struct rk3128_cru *cru)
+{
+	u32 div, val;
+
+	val = readl(&cru->cru_clksel_con[24]);
+	div = bitfield_extract(val, SARADC_DIV_CON_SHIFT,
+			       SARADC_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(OSC_HZ, div);
+}
+
+static ulong rk3128_saradc_set_clk(struct rk3128_cru *cru, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1;
+	assert(src_clk_div < 128);
+
+	rk_clrsetreg(&cru->cru_clksel_con[24],
+		     SARADC_DIV_CON_MASK,
+		     src_clk_div << SARADC_DIV_CON_SHIFT);
+
+	return rk3128_saradc_get_clk(cru);
+}
+
+static ulong rk3128_vop_set_clk(struct rk3128_cru *cru, ulong clk_id, uint hz)
+{
+	int src_clk_div;
+	struct pll_div cpll_config = {0};
+
+	src_clk_div = GPLL_HZ / hz;
+	assert(src_clk_div - 1 < 31);
+
+	switch (clk_id) {
+	case ACLK_VIO0:
+		rk_clrsetreg(&cru->cru_clksel_con[31],
+			     VIO0_PLL_MASK | VIO0_DIV_MASK,
+			     VIO0_SEL_GPLL << VIO0_PLL_SHIFT |
+			     (src_clk_div - 1) << VIO0_DIV_SHIFT);
+		break;
+	case ACLK_VIO1:
+		rk_clrsetreg(&cru->cru_clksel_con[31],
+			     VIO1_PLL_MASK | VIO1_DIV_MASK,
+			     VIO1_SEL_GPLL << VIO1_PLL_SHIFT |
+			     (src_clk_div - 1) << VIO1_DIV_SHIFT);
+		break;
+	case DCLK_LCDC:
+		if (pll_para_config(hz, &cpll_config))
+			return -1;
+		rkclk_set_pll(cru, CLK_CODEC, &cpll_config);
+
+		rk_clrsetreg(&cru->cru_clksel_con[27],
+			     DCLK_VOP_SEL_MASK | DCLK_VOP_DIV_CON_MASK,
+			     DCLK_VOP_PLL_SEL_CPLL << DCLK_VOP_SEL_SHIFT |
+			     (1 - 1) << DCLK_VOP_DIV_CON_SHIFT);
+		break;
+	default:
+		printf("do not support this vop freq\n");
+		return -EINVAL;
+	}
+
+	return hz;
+}
+
+static ulong rk3128_vop_get_rate(struct rk3128_cru *cru, ulong clk_id)
+{
+	u32 div, con, parent;
+
+	switch (clk_id) {
+	case ACLK_VIO0:
+		con = readl(&cru->cru_clksel_con[31]);
+		div = con  & 0x1f;
+		parent = GPLL_HZ;
+		break;
+	case ACLK_VIO1:
+		con = readl(&cru->cru_clksel_con[31]);
+		div = (con >> 8) & 0x1f;
+		parent = GPLL_HZ;
+		break;
+	case DCLK_LCDC:
+		con = readl(&cru->cru_clksel_con[27]);
+		div = (con >> 8) & 0xfff;
+		parent = rkclk_pll_get_rate(cru, CLK_CODEC);
+		break;
+	default:
+		return -ENOENT;
+	}
+	return DIV_TO_RATE(parent, div);
+}
+
+static ulong rk3128_clk_get_rate(struct clk *clk)
+{
+	struct rk3128_clk_priv *priv = dev_get_priv(clk->dev);
+
+	switch (clk->id) {
+	case 0 ... 63:
+		return rkclk_pll_get_rate(priv->cru, clk->id);
+	case PCLK_I2C0:
+	case PCLK_I2C1:
+	case PCLK_I2C2:
+	case PCLK_I2C3:
+	case PCLK_PWM:
+		return rk3128_peri_get_pclk(priv->cru, clk->id);
+	case SCLK_SARADC:
+		return rk3128_saradc_get_clk(priv->cru);
+	case DCLK_LCDC:
+	case ACLK_VIO0:
+	case ACLK_VIO1:
+		return rk3128_vop_get_rate(priv->cru, clk->id);
+	default:
+		return -ENOENT;
+	}
+}
+
+static ulong rk3128_clk_set_rate(struct clk *clk, ulong rate)
+{
+	struct rk3128_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong new_rate, gclk_rate;
+
+	gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
+	switch (clk->id) {
+	case 0 ... 63:
+		return 0;
+	case DCLK_LCDC:
+	case ACLK_VIO0:
+	case ACLK_VIO1:
+		new_rate = rk3128_vop_set_clk(priv->cru,
+					      clk->id, rate);
+		break;
+	case HCLK_EMMC:
+		new_rate = rockchip_mmc_set_clk(priv->cru, gclk_rate,
+						clk->id, rate);
+		break;
+	case PCLK_I2C0:
+	case PCLK_I2C1:
+	case PCLK_I2C2:
+	case PCLK_I2C3:
+	case PCLK_PWM:
+		new_rate = rk3128_peri_set_pclk(priv->cru, clk->id, rate);
+		break;
+	case SCLK_SARADC:
+		new_rate = rk3128_saradc_set_clk(priv->cru, rate);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return new_rate;
+}
+
+static struct clk_ops rk3128_clk_ops = {
+	.get_rate	= rk3128_clk_get_rate,
+	.set_rate	= rk3128_clk_set_rate,
+};
+
+static int rk3128_clk_ofdata_to_platdata(struct udevice *dev)
+{
+	struct rk3128_clk_priv *priv = dev_get_priv(dev);
+
+	priv->cru = dev_read_addr_ptr(dev);
+
+	return 0;
+}
+
+static int rk3128_clk_probe(struct udevice *dev)
+{
+	struct rk3128_clk_priv *priv = dev_get_priv(dev);
+
+	rkclk_init(priv->cru);
+
+	return 0;
+}
+
+static int rk3128_clk_bind(struct udevice *dev)
+{
+	int ret;
+	struct udevice *sys_child;
+	struct sysreset_reg *priv;
+
+	/* The reset driver does not have a device node, so bind it here */
+	ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
+				 &sys_child);
+	if (ret) {
+		debug("Warning: No sysreset driver: ret=%d\n", ret);
+	} else {
+		priv = malloc(sizeof(struct sysreset_reg));
+		priv->glb_srst_fst_value = offsetof(struct rk3128_cru,
+						    cru_glb_srst_fst_value);
+		priv->glb_srst_snd_value = offsetof(struct rk3128_cru,
+						    cru_glb_srst_snd_value);
+		sys_child->priv = priv;
+	}
+
+	return 0;
+}
+
+static const struct udevice_id rk3128_clk_ids[] = {
+	{ .compatible = "rockchip,rk3128-cru" },
+	{ .compatible = "rockchip,rk3126-cru" },
+	{ }
+};
+
+U_BOOT_DRIVER(rockchip_rk3128_cru) = {
+	.name		= "clk_rk3128",
+	.id		= UCLASS_CLK,
+	.of_match	= rk3128_clk_ids,
+	.priv_auto_alloc_size = sizeof(struct rk3128_clk_priv),
+	.ofdata_to_platdata = rk3128_clk_ofdata_to_platdata,
+	.ops		= &rk3128_clk_ops,
+	.bind		= rk3128_clk_bind,
+	.probe		= rk3128_clk_probe,
+};

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/clk_rk3188.c

@@ -0,0 +1,619 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2015 Google, Inc
+ * (C) Copyright 2016 Heiko Stuebner <heiko@sntech.de>
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dt-structs.h>
+#include <errno.h>
+#include <mapmem.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3188.h>
+#include <asm/arch-rockchip/grf_rk3188.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <dt-bindings/clock/rk3188-cru.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <dm/uclass-internal.h>
+#include <linux/log2.h>
+
+enum rk3188_clk_type {
+	RK3188_CRU,
+	RK3188A_CRU,
+};
+
+struct rk3188_clk_plat {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct dtd_rockchip_rk3188_cru dtd;
+#endif
+};
+
+struct pll_div {
+	u32 nr;
+	u32 nf;
+	u32 no;
+};
+
+enum {
+	VCO_MAX_HZ	= 2200U * 1000000,
+	VCO_MIN_HZ	= 440 * 1000000,
+	OUTPUT_MAX_HZ	= 2200U * 1000000,
+	OUTPUT_MIN_HZ	= 30 * 1000000,
+	FREF_MAX_HZ	= 2200U * 1000000,
+	FREF_MIN_HZ	= 30 * 1000,
+};
+
+enum {
+	/* PLL CON0 */
+	PLL_OD_MASK		= 0x0f,
+
+	/* PLL CON1 */
+	PLL_NF_MASK		= 0x1fff,
+
+	/* PLL CON2 */
+	PLL_BWADJ_MASK		= 0x0fff,
+
+	/* PLL CON3 */
+	PLL_RESET_SHIFT		= 5,
+
+	/* GRF_SOC_STATUS0 */
+	SOCSTS_DPLL_LOCK	= 1 << 5,
+	SOCSTS_APLL_LOCK	= 1 << 6,
+	SOCSTS_CPLL_LOCK	= 1 << 7,
+	SOCSTS_GPLL_LOCK	= 1 << 8,
+};
+
+#define DIV_TO_RATE(input_rate, div)	((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _nr, _no) {\
+	.nr = _nr, .nf = (u32)((u64)hz * _nr * _no / OSC_HZ), .no = _no};\
+	_Static_assert(((u64)hz * _nr * _no / OSC_HZ) * OSC_HZ /\
+		       (_nr * _no) == hz, #hz "Hz cannot be hit with PLL "\
+		       "divisors on line " __stringify(__LINE__));
+
+/* Keep divisors as low as possible to reduce jitter and power usage */
+#ifdef CONFIG_SPL_BUILD
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2);
+static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2);
+#endif
+
+static int rkclk_set_pll(struct rk3188_cru *cru, enum rk_clk_id clk_id,
+			 const struct pll_div *div, bool has_bwadj)
+{
+	int pll_id = rk_pll_id(clk_id);
+	struct rk3188_pll *pll = &cru->pll[pll_id];
+	/* All PLLs have same VCO and output frequency range restrictions. */
+	uint vco_hz = OSC_HZ / 1000 * div->nf / div->nr * 1000;
+	uint output_hz = vco_hz / div->no;
+
+	debug("PLL at %x: nf=%d, nr=%d, no=%d, vco=%u Hz, output=%u Hz\n",
+	      (uint)pll, div->nf, div->nr, div->no, vco_hz, output_hz);
+	assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
+	       output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ &&
+	       (div->no == 1 || !(div->no % 2)));
+
+	/* enter reset */
+	rk_setreg(&pll->con3, 1 << PLL_RESET_SHIFT);
+
+	rk_clrsetreg(&pll->con0,
+		     CLKR_MASK << CLKR_SHIFT | PLL_OD_MASK,
+		     ((div->nr - 1) << CLKR_SHIFT) | (div->no - 1));
+	rk_clrsetreg(&pll->con1, CLKF_MASK, div->nf - 1);
+
+	if (has_bwadj)
+		rk_clrsetreg(&pll->con2, PLL_BWADJ_MASK, (div->nf >> 1) - 1);
+
+	udelay(10);
+
+	/* return from reset */
+	rk_clrreg(&pll->con3, 1 << PLL_RESET_SHIFT);
+
+	return 0;
+}
+
+static int rkclk_configure_ddr(struct rk3188_cru *cru, struct rk3188_grf *grf,
+			       unsigned int hz, bool has_bwadj)
+{
+	static const struct pll_div dpll_cfg[] = {
+		{.nf = 75, .nr = 1, .no = 6},
+		{.nf = 400, .nr = 9, .no = 2},
+		{.nf = 500, .nr = 9, .no = 2},
+		{.nf = 100, .nr = 3, .no = 1},
+	};
+	int cfg;
+
+	switch (hz) {
+	case 300000000:
+		cfg = 0;
+		break;
+	case 533000000:	/* actually 533.3P MHz */
+		cfg = 1;
+		break;
+	case 666000000:	/* actually 666.6P MHz */
+		cfg = 2;
+		break;
+	case 800000000:
+		cfg = 3;
+		break;
+	default:
+		debug("Unsupported SDRAM frequency");
+		return -EINVAL;
+	}
+
+	/* pll enter slow-mode */
+	rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK << DPLL_MODE_SHIFT,
+		     DPLL_MODE_SLOW << DPLL_MODE_SHIFT);
+
+	rkclk_set_pll(cru, CLK_DDR, &dpll_cfg[cfg], has_bwadj);
+
+	/* wait for pll lock */
+	while (!(readl(&grf->soc_status0) & SOCSTS_DPLL_LOCK))
+		udelay(1);
+
+	/* PLL enter normal-mode */
+	rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK << DPLL_MODE_SHIFT,
+		     DPLL_MODE_NORMAL << DPLL_MODE_SHIFT);
+
+	return 0;
+}
+
+static int rkclk_configure_cpu(struct rk3188_cru *cru, struct rk3188_grf *grf,
+			      unsigned int hz, bool has_bwadj)
+{
+	static const struct pll_div apll_cfg[] = {
+		{.nf = 50, .nr = 1, .no = 2},
+		{.nf = 67, .nr = 1, .no = 1},
+	};
+	int div_core_peri, div_aclk_core, cfg;
+
+	/*
+	 * We support two possible frequencies, the safe 600MHz
+	 * which will work with default pmic settings and will
+	 * be set in SPL to get away from the 24MHz default and
+	 * the maximum of 1.6Ghz, which boards can set if they
+	 * were able to get pmic support for it.
+	 */
+	switch (hz) {
+	case APLL_SAFE_HZ:
+		cfg = 0;
+		div_core_peri = 1;
+		div_aclk_core = 3;
+		break;
+	case APLL_HZ:
+		cfg = 1;
+		div_core_peri = 2;
+		div_aclk_core = 3;
+		break;
+	default:
+		debug("Unsupported ARMCLK frequency");
+		return -EINVAL;
+	}
+
+	/* pll enter slow-mode */
+	rk_clrsetreg(&cru->cru_mode_con, APLL_MODE_MASK << APLL_MODE_SHIFT,
+		     APLL_MODE_SLOW << APLL_MODE_SHIFT);
+
+	rkclk_set_pll(cru, CLK_ARM, &apll_cfg[cfg], has_bwadj);
+
+	/* waiting for pll lock */
+	while (!(readl(&grf->soc_status0) & SOCSTS_APLL_LOCK))
+		udelay(1);
+
+	/* Set divider for peripherals attached to the cpu core. */
+	rk_clrsetreg(&cru->cru_clksel_con[0],
+		CORE_PERI_DIV_MASK << CORE_PERI_DIV_SHIFT,
+		div_core_peri << CORE_PERI_DIV_SHIFT);
+
+	/* set up dependent divisor for aclk_core */
+	rk_clrsetreg(&cru->cru_clksel_con[1],
+		CORE_ACLK_DIV_MASK << CORE_ACLK_DIV_SHIFT,
+		div_aclk_core << CORE_ACLK_DIV_SHIFT);
+
+	/* PLL enter normal-mode */
+	rk_clrsetreg(&cru->cru_mode_con, APLL_MODE_MASK << APLL_MODE_SHIFT,
+		     APLL_MODE_NORMAL << APLL_MODE_SHIFT);
+
+	return hz;
+}
+
+/* Get pll rate by id */
+static uint32_t rkclk_pll_get_rate(struct rk3188_cru *cru,
+				   enum rk_clk_id clk_id)
+{
+	uint32_t nr, no, nf;
+	uint32_t con;
+	int pll_id = rk_pll_id(clk_id);
+	struct rk3188_pll *pll = &cru->pll[pll_id];
+	static u8 clk_shift[CLK_COUNT] = {
+		0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, CPLL_MODE_SHIFT,
+		GPLL_MODE_SHIFT
+	};
+	uint shift;
+
+	con = readl(&cru->cru_mode_con);
+	shift = clk_shift[clk_id];
+	switch ((con >> shift) & APLL_MODE_MASK) {
+	case APLL_MODE_SLOW:
+		return OSC_HZ;
+	case APLL_MODE_NORMAL:
+		/* normal mode */
+		con = readl(&pll->con0);
+		no = ((con >> CLKOD_SHIFT) & CLKOD_MASK) + 1;
+		nr = ((con >> CLKR_SHIFT) & CLKR_MASK) + 1;
+		con = readl(&pll->con1);
+		nf = ((con >> CLKF_SHIFT) & CLKF_MASK) + 1;
+
+		return (24 * nf / (nr * no)) * 1000000;
+	case APLL_MODE_DEEP:
+	default:
+		return 32768;
+	}
+}
+
+static ulong rockchip_mmc_get_clk(struct rk3188_cru *cru, uint gclk_rate,
+				  int periph)
+{
+	uint div;
+	u32 con;
+
+	switch (periph) {
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+		con = readl(&cru->cru_clksel_con[12]);
+		div = (con >> EMMC_DIV_SHIFT) & EMMC_DIV_MASK;
+		break;
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		con = readl(&cru->cru_clksel_con[11]);
+		div = (con >> MMC0_DIV_SHIFT) & MMC0_DIV_MASK;
+		break;
+	case HCLK_SDIO:
+	case SCLK_SDIO:
+		con = readl(&cru->cru_clksel_con[12]);
+		div = (con >> SDIO_DIV_SHIFT) & SDIO_DIV_MASK;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return DIV_TO_RATE(gclk_rate, div) / 2;
+}
+
+static ulong rockchip_mmc_set_clk(struct rk3188_cru *cru, uint gclk_rate,
+				  int  periph, uint freq)
+{
+	int src_clk_div;
+
+	debug("%s: gclk_rate=%u\n", __func__, gclk_rate);
+	/* mmc clock defaulg div 2 internal, need provide double in cru */
+	src_clk_div = DIV_ROUND_UP(gclk_rate / 2, freq) - 1;
+	assert(src_clk_div <= 0x3f);
+
+	switch (periph) {
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+		rk_clrsetreg(&cru->cru_clksel_con[12],
+			     EMMC_DIV_MASK << EMMC_DIV_SHIFT,
+			     src_clk_div << EMMC_DIV_SHIFT);
+		break;
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		rk_clrsetreg(&cru->cru_clksel_con[11],
+			     MMC0_DIV_MASK << MMC0_DIV_SHIFT,
+			     src_clk_div << MMC0_DIV_SHIFT);
+		break;
+	case HCLK_SDIO:
+	case SCLK_SDIO:
+		rk_clrsetreg(&cru->cru_clksel_con[12],
+			     SDIO_DIV_MASK << SDIO_DIV_SHIFT,
+			     src_clk_div << SDIO_DIV_SHIFT);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return rockchip_mmc_get_clk(cru, gclk_rate, periph);
+}
+
+static ulong rockchip_spi_get_clk(struct rk3188_cru *cru, uint gclk_rate,
+				  int periph)
+{
+	uint div;
+	u32 con;
+
+	switch (periph) {
+	case SCLK_SPI0:
+		con = readl(&cru->cru_clksel_con[25]);
+		div = (con >> SPI0_DIV_SHIFT) & SPI0_DIV_MASK;
+		break;
+	case SCLK_SPI1:
+		con = readl(&cru->cru_clksel_con[25]);
+		div = (con >> SPI1_DIV_SHIFT) & SPI1_DIV_MASK;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return DIV_TO_RATE(gclk_rate, div);
+}
+
+static ulong rockchip_spi_set_clk(struct rk3188_cru *cru, uint gclk_rate,
+				  int periph, uint freq)
+{
+	int src_clk_div = DIV_ROUND_UP(gclk_rate, freq) - 1;
+
+	assert(src_clk_div < 128);
+	switch (periph) {
+	case SCLK_SPI0:
+		assert(src_clk_div <= SPI0_DIV_MASK);
+		rk_clrsetreg(&cru->cru_clksel_con[25],
+			     SPI0_DIV_MASK << SPI0_DIV_SHIFT,
+			     src_clk_div << SPI0_DIV_SHIFT);
+		break;
+	case SCLK_SPI1:
+		assert(src_clk_div <= SPI1_DIV_MASK);
+		rk_clrsetreg(&cru->cru_clksel_con[25],
+			     SPI1_DIV_MASK << SPI1_DIV_SHIFT,
+			     src_clk_div << SPI1_DIV_SHIFT);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return rockchip_spi_get_clk(cru, gclk_rate, periph);
+}
+
+#ifdef CONFIG_SPL_BUILD
+static void rkclk_init(struct rk3188_cru *cru, struct rk3188_grf *grf,
+		       bool has_bwadj)
+{
+	u32 aclk_div, hclk_div, pclk_div, h2p_div;
+
+	/* pll enter slow-mode */
+	rk_clrsetreg(&cru->cru_mode_con,
+		     GPLL_MODE_MASK << GPLL_MODE_SHIFT |
+		     CPLL_MODE_MASK << CPLL_MODE_SHIFT,
+		     GPLL_MODE_SLOW << GPLL_MODE_SHIFT |
+		     CPLL_MODE_SLOW << CPLL_MODE_SHIFT);
+
+	/* init pll */
+	rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg, has_bwadj);
+	rkclk_set_pll(cru, CLK_CODEC, &cpll_init_cfg, has_bwadj);
+
+	/* waiting for pll lock */
+	while ((readl(&grf->soc_status0) &
+			(SOCSTS_CPLL_LOCK | SOCSTS_GPLL_LOCK)) !=
+			(SOCSTS_CPLL_LOCK | SOCSTS_GPLL_LOCK))
+		udelay(1);
+
+	/*
+	 * cpu clock pll source selection and
+	 * reparent aclk_cpu_pre from apll to gpll
+	 * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+	 */
+	aclk_div = DIV_ROUND_UP(GPLL_HZ, CPU_ACLK_HZ) - 1;
+	assert((aclk_div + 1) * CPU_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f);
+
+	rk_clrsetreg(&cru->cru_clksel_con[0],
+		     CPU_ACLK_PLL_MASK << CPU_ACLK_PLL_SHIFT |
+		     A9_CPU_DIV_MASK << A9_CPU_DIV_SHIFT,
+		     CPU_ACLK_PLL_SELECT_GPLL << CPU_ACLK_PLL_SHIFT |
+		     aclk_div << A9_CPU_DIV_SHIFT);
+
+	hclk_div = ilog2(CPU_ACLK_HZ / CPU_HCLK_HZ);
+	assert((1 << hclk_div) * CPU_HCLK_HZ == CPU_ACLK_HZ && hclk_div < 0x3);
+	pclk_div = ilog2(CPU_ACLK_HZ / CPU_PCLK_HZ);
+	assert((1 << pclk_div) * CPU_PCLK_HZ == CPU_ACLK_HZ && pclk_div < 0x4);
+	h2p_div = ilog2(CPU_HCLK_HZ / CPU_H2P_HZ);
+	assert((1 << h2p_div) * CPU_H2P_HZ == CPU_HCLK_HZ && pclk_div < 0x3);
+
+	rk_clrsetreg(&cru->cru_clksel_con[1],
+		     AHB2APB_DIV_MASK << AHB2APB_DIV_SHIFT |
+		     CPU_PCLK_DIV_MASK << CPU_PCLK_DIV_SHIFT |
+		     CPU_HCLK_DIV_MASK << CPU_HCLK_DIV_SHIFT,
+		     h2p_div << AHB2APB_DIV_SHIFT |
+		     pclk_div << CPU_PCLK_DIV_SHIFT |
+		     hclk_div << CPU_HCLK_DIV_SHIFT);
+
+	/*
+	 * peri clock pll source selection and
+	 * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+	 */
+	aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1;
+	assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
+
+	hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ);
+	assert((1 << hclk_div) * PERI_HCLK_HZ ==
+		PERI_ACLK_HZ && (hclk_div < 0x4));
+
+	pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ);
+	assert((1 << pclk_div) * PERI_PCLK_HZ ==
+		PERI_ACLK_HZ && (pclk_div < 0x4));
+
+	rk_clrsetreg(&cru->cru_clksel_con[10],
+		     PERI_PCLK_DIV_MASK << PERI_PCLK_DIV_SHIFT |
+		     PERI_HCLK_DIV_MASK << PERI_HCLK_DIV_SHIFT |
+		     PERI_ACLK_DIV_MASK << PERI_ACLK_DIV_SHIFT,
+		     PERI_SEL_GPLL << PERI_SEL_PLL_SHIFT |
+		     pclk_div << PERI_PCLK_DIV_SHIFT |
+		     hclk_div << PERI_HCLK_DIV_SHIFT |
+		     aclk_div << PERI_ACLK_DIV_SHIFT);
+
+	/* PLL enter normal-mode */
+	rk_clrsetreg(&cru->cru_mode_con,
+		     GPLL_MODE_MASK << GPLL_MODE_SHIFT |
+		     CPLL_MODE_MASK << CPLL_MODE_SHIFT,
+		     GPLL_MODE_NORMAL << GPLL_MODE_SHIFT |
+		     CPLL_MODE_NORMAL << CPLL_MODE_SHIFT);
+
+	rockchip_mmc_set_clk(cru, PERI_HCLK_HZ, HCLK_SDMMC, 16000000);
+}
+#endif
+
+static ulong rk3188_clk_get_rate(struct clk *clk)
+{
+	struct rk3188_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong new_rate, gclk_rate;
+
+	gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
+	switch (clk->id) {
+	case 1 ... 4:
+		new_rate = rkclk_pll_get_rate(priv->cru, clk->id);
+		break;
+	case HCLK_EMMC:
+	case HCLK_SDMMC:
+	case HCLK_SDIO:
+	case SCLK_EMMC:
+	case SCLK_SDMMC:
+	case SCLK_SDIO:
+		new_rate = rockchip_mmc_get_clk(priv->cru, PERI_HCLK_HZ,
+						clk->id);
+		break;
+	case SCLK_SPI0:
+	case SCLK_SPI1:
+		new_rate = rockchip_spi_get_clk(priv->cru, PERI_PCLK_HZ,
+						clk->id);
+		break;
+	case PCLK_I2C0:
+	case PCLK_I2C1:
+	case PCLK_I2C2:
+	case PCLK_I2C3:
+	case PCLK_I2C4:
+		return gclk_rate;
+	default:
+		return -ENOENT;
+	}
+
+	return new_rate;
+}
+
+static ulong rk3188_clk_set_rate(struct clk *clk, ulong rate)
+{
+	struct rk3188_clk_priv *priv = dev_get_priv(clk->dev);
+	struct rk3188_cru *cru = priv->cru;
+	ulong new_rate;
+
+	switch (clk->id) {
+	case PLL_APLL:
+		new_rate = rkclk_configure_cpu(priv->cru, priv->grf, rate,
+					       priv->has_bwadj);
+		break;
+	case CLK_DDR:
+		new_rate = rkclk_configure_ddr(priv->cru, priv->grf, rate,
+					       priv->has_bwadj);
+		break;
+	case HCLK_EMMC:
+	case HCLK_SDMMC:
+	case HCLK_SDIO:
+	case SCLK_EMMC:
+	case SCLK_SDMMC:
+	case SCLK_SDIO:
+		new_rate = rockchip_mmc_set_clk(cru, PERI_HCLK_HZ,
+						clk->id, rate);
+		break;
+	case SCLK_SPI0:
+	case SCLK_SPI1:
+		new_rate = rockchip_spi_set_clk(cru, PERI_PCLK_HZ,
+						clk->id, rate);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return new_rate;
+}
+
+static struct clk_ops rk3188_clk_ops = {
+	.get_rate	= rk3188_clk_get_rate,
+	.set_rate	= rk3188_clk_set_rate,
+};
+
+static int rk3188_clk_ofdata_to_platdata(struct udevice *dev)
+{
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct rk3188_clk_priv *priv = dev_get_priv(dev);
+
+	priv->cru = dev_read_addr_ptr(dev);
+#endif
+
+	return 0;
+}
+
+static int rk3188_clk_probe(struct udevice *dev)
+{
+	struct rk3188_clk_priv *priv = dev_get_priv(dev);
+	enum rk3188_clk_type type = dev_get_driver_data(dev);
+
+	priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+	if (IS_ERR(priv->grf))
+		return PTR_ERR(priv->grf);
+	priv->has_bwadj = (type == RK3188A_CRU) ? 1 : 0;
+
+#ifdef CONFIG_SPL_BUILD
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct rk3188_clk_plat *plat = dev_get_platdata(dev);
+
+	priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
+#endif
+
+	rkclk_init(priv->cru, priv->grf, priv->has_bwadj);
+
+	/* Init CPU frequency */
+	rkclk_configure_cpu(priv->cru, priv->grf, APLL_HZ, priv->has_bwadj);
+#endif
+
+	return 0;
+}
+
+static int rk3188_clk_bind(struct udevice *dev)
+{
+	int ret;
+	struct udevice *sys_child;
+	struct sysreset_reg *priv;
+
+	/* The reset driver does not have a device node, so bind it here */
+	ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
+				 &sys_child);
+	if (ret) {
+		debug("Warning: No sysreset driver: ret=%d\n", ret);
+	} else {
+		priv = malloc(sizeof(struct sysreset_reg));
+		priv->glb_srst_fst_value = offsetof(struct rk3188_cru,
+						    cru_glb_srst_fst_value);
+		priv->glb_srst_snd_value = offsetof(struct rk3188_cru,
+						    cru_glb_srst_snd_value);
+		sys_child->priv = priv;
+	}
+
+#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
+	ret = offsetof(struct rk3188_cru, cru_softrst_con[0]);
+	ret = rockchip_reset_bind(dev, ret, 9);
+	if (ret)
+		debug("Warning: software reset driver bind faile\n");
+#endif
+
+	return 0;
+}
+
+static const struct udevice_id rk3188_clk_ids[] = {
+	{ .compatible = "rockchip,rk3188-cru", .data = RK3188_CRU },
+	{ .compatible = "rockchip,rk3188a-cru", .data = RK3188A_CRU },
+	{ }
+};
+
+U_BOOT_DRIVER(rockchip_rk3188_cru) = {
+	.name			= "rockchip_rk3188_cru",
+	.id			= UCLASS_CLK,
+	.of_match		= rk3188_clk_ids,
+	.priv_auto_alloc_size	= sizeof(struct rk3188_clk_priv),
+	.platdata_auto_alloc_size = sizeof(struct rk3188_clk_plat),
+	.ops			= &rk3188_clk_ops,
+	.bind			= rk3188_clk_bind,
+	.ofdata_to_platdata	= rk3188_clk_ofdata_to_platdata,
+	.probe			= rk3188_clk_probe,
+};

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/clk_rk322x.c

@@ -0,0 +1,535 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2017 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk322x.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rk3228-cru.h>
+#include <linux/log2.h>
+
+enum {
+	VCO_MAX_HZ	= 3200U * 1000000,
+	VCO_MIN_HZ	= 800 * 1000000,
+	OUTPUT_MAX_HZ	= 3200U * 1000000,
+	OUTPUT_MIN_HZ	= 24 * 1000000,
+};
+
+#define DIV_TO_RATE(input_rate, div)	((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
+	.refdiv = _refdiv,\
+	.fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ), \
+	.postdiv1 = _postdiv1, .postdiv2 = _postdiv2};\
+	_Static_assert(((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ) * \
+			 OSC_HZ / (_refdiv * _postdiv1 * _postdiv2) == hz, \
+			 #hz "Hz cannot be hit with PLL "\
+			 "divisors on line " __stringify(__LINE__));
+
+/* use integer mode*/
+static const struct pll_div apll_init_cfg = PLL_DIVISORS(APLL_HZ, 1, 3, 1);
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
+
+static int rkclk_set_pll(struct rk322x_cru *cru, enum rk_clk_id clk_id,
+			 const struct pll_div *div)
+{
+	int pll_id = rk_pll_id(clk_id);
+	struct rk322x_pll *pll = &cru->pll[pll_id];
+
+	/* All PLLs have same VCO and output frequency range restrictions. */
+	uint vco_hz = OSC_HZ / 1000 * div->fbdiv / div->refdiv * 1000;
+	uint output_hz = vco_hz / div->postdiv1 / div->postdiv2;
+
+	debug("PLL at %p: fb=%d, ref=%d, pst1=%d, pst2=%d, vco=%u Hz, output=%u Hz\n",
+	      pll, div->fbdiv, div->refdiv, div->postdiv1,
+	      div->postdiv2, vco_hz, output_hz);
+	assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
+	       output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ);
+
+	/* use integer mode */
+	rk_setreg(&pll->con1, 1 << PLL_DSMPD_SHIFT);
+	/* Power down */
+	rk_setreg(&pll->con1, 1 << PLL_PD_SHIFT);
+
+	rk_clrsetreg(&pll->con0,
+		     PLL_POSTDIV1_MASK | PLL_FBDIV_MASK,
+		     (div->postdiv1 << PLL_POSTDIV1_SHIFT) | div->fbdiv);
+	rk_clrsetreg(&pll->con1, PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
+		     (div->postdiv2 << PLL_POSTDIV2_SHIFT |
+		     div->refdiv << PLL_REFDIV_SHIFT));
+
+	/* Power Up */
+	rk_clrreg(&pll->con1, 1 << PLL_PD_SHIFT);
+
+	/* waiting for pll lock */
+	while (readl(&pll->con1) & (1 << PLL_LOCK_STATUS_SHIFT))
+		udelay(1);
+
+	return 0;
+}
+
+static void rkclk_init(struct rk322x_cru *cru)
+{
+	u32 aclk_div;
+	u32 hclk_div;
+	u32 pclk_div;
+
+	/* pll enter slow-mode */
+	rk_clrsetreg(&cru->cru_mode_con,
+		     GPLL_MODE_MASK | APLL_MODE_MASK,
+		     GPLL_MODE_SLOW << GPLL_MODE_SHIFT |
+		     APLL_MODE_SLOW << APLL_MODE_SHIFT);
+
+	/* init pll */
+	rkclk_set_pll(cru, CLK_ARM, &apll_init_cfg);
+	rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
+
+	/*
+	 * select apll as cpu/core clock pll source and
+	 * set up dependent divisors for PERI and ACLK clocks.
+	 * core hz : apll = 1:1
+	 */
+	aclk_div = APLL_HZ / CORE_ACLK_HZ - 1;
+	assert((aclk_div + 1) * CORE_ACLK_HZ == APLL_HZ && aclk_div < 0x7);
+
+	pclk_div = APLL_HZ / CORE_PERI_HZ - 1;
+	assert((pclk_div + 1) * CORE_PERI_HZ == APLL_HZ && pclk_div < 0xf);
+
+	rk_clrsetreg(&cru->cru_clksel_con[0],
+		     CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK,
+		     CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
+		     0 << CORE_DIV_CON_SHIFT);
+
+	rk_clrsetreg(&cru->cru_clksel_con[1],
+		     CORE_ACLK_DIV_MASK | CORE_PERI_DIV_MASK,
+		     aclk_div << CORE_ACLK_DIV_SHIFT |
+		     pclk_div << CORE_PERI_DIV_SHIFT);
+
+	/*
+	 * select gpll as pd_bus bus clock source and
+	 * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+	 */
+	aclk_div = GPLL_HZ / BUS_ACLK_HZ - 1;
+	assert((aclk_div + 1) * BUS_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f);
+
+	pclk_div = BUS_ACLK_HZ / BUS_PCLK_HZ - 1;
+	assert((pclk_div + 1) * BUS_PCLK_HZ == BUS_ACLK_HZ && pclk_div <= 0x7);
+
+	hclk_div = BUS_ACLK_HZ / BUS_HCLK_HZ - 1;
+	assert((hclk_div + 1) * BUS_HCLK_HZ == BUS_ACLK_HZ && hclk_div <= 0x3);
+
+	rk_clrsetreg(&cru->cru_clksel_con[0],
+		     BUS_ACLK_PLL_SEL_MASK | BUS_ACLK_DIV_MASK,
+		     BUS_ACLK_PLL_SEL_GPLL << BUS_ACLK_PLL_SEL_SHIFT |
+		     aclk_div << BUS_ACLK_DIV_SHIFT);
+
+	rk_clrsetreg(&cru->cru_clksel_con[1],
+		     BUS_PCLK_DIV_MASK | BUS_HCLK_DIV_MASK,
+		     pclk_div << BUS_PCLK_DIV_SHIFT |
+		     hclk_div << BUS_HCLK_DIV_SHIFT);
+
+	/*
+	 * select gpll as pd_peri bus clock source and
+	 * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+	 */
+	aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1;
+	assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
+
+	hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ);
+	assert((1 << hclk_div) * PERI_HCLK_HZ ==
+		PERI_ACLK_HZ && (hclk_div < 0x4));
+
+	pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ);
+	assert((1 << pclk_div) * PERI_PCLK_HZ ==
+		PERI_ACLK_HZ && pclk_div < 0x8);
+
+	rk_clrsetreg(&cru->cru_clksel_con[10],
+		     PERI_PLL_SEL_MASK | PERI_PCLK_DIV_MASK |
+		     PERI_HCLK_DIV_MASK | PERI_ACLK_DIV_MASK,
+		     PERI_PLL_GPLL << PERI_PLL_SEL_SHIFT |
+		     pclk_div << PERI_PCLK_DIV_SHIFT |
+		     hclk_div << PERI_HCLK_DIV_SHIFT |
+		     aclk_div << PERI_ACLK_DIV_SHIFT);
+
+	/* PLL enter normal-mode */
+	rk_clrsetreg(&cru->cru_mode_con,
+		     GPLL_MODE_MASK | APLL_MODE_MASK,
+		     GPLL_MODE_NORM << GPLL_MODE_SHIFT |
+		     APLL_MODE_NORM << APLL_MODE_SHIFT);
+}
+
+/* Get pll rate by id */
+static uint32_t rkclk_pll_get_rate(struct rk322x_cru *cru,
+				   enum rk_clk_id clk_id)
+{
+	uint32_t refdiv, fbdiv, postdiv1, postdiv2;
+	uint32_t con;
+	int pll_id = rk_pll_id(clk_id);
+	struct rk322x_pll *pll = &cru->pll[pll_id];
+	static u8 clk_shift[CLK_COUNT] = {
+		0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, 0xff,
+		GPLL_MODE_SHIFT, 0xff
+	};
+	static u32 clk_mask[CLK_COUNT] = {
+		0xff, APLL_MODE_MASK, DPLL_MODE_MASK, 0xff,
+		GPLL_MODE_MASK, 0xff
+	};
+	uint shift;
+	uint mask;
+
+	con = readl(&cru->cru_mode_con);
+	shift = clk_shift[clk_id];
+	mask = clk_mask[clk_id];
+
+	switch ((con & mask) >> shift) {
+	case GPLL_MODE_SLOW:
+		return OSC_HZ;
+	case GPLL_MODE_NORM:
+
+		/* normal mode */
+		con = readl(&pll->con0);
+		postdiv1 = (con & PLL_POSTDIV1_MASK) >> PLL_POSTDIV1_SHIFT;
+		fbdiv = (con & PLL_FBDIV_MASK) >> PLL_FBDIV_SHIFT;
+		con = readl(&pll->con1);
+		postdiv2 = (con & PLL_POSTDIV2_MASK) >> PLL_POSTDIV2_SHIFT;
+		refdiv = (con & PLL_REFDIV_MASK) >> PLL_REFDIV_SHIFT;
+		return (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
+	default:
+		return 32768;
+	}
+}
+
+static ulong rockchip_mmc_get_clk(struct rk322x_cru *cru, uint clk_general_rate,
+				  int periph)
+{
+	uint src_rate;
+	uint div, mux;
+	u32 con;
+
+	switch (periph) {
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+	case SCLK_EMMC_SAMPLE:
+		con = readl(&cru->cru_clksel_con[11]);
+		mux = (con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT;
+		con = readl(&cru->cru_clksel_con[12]);
+		div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT;
+		break;
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		con = readl(&cru->cru_clksel_con[11]);
+		mux = (con & MMC0_PLL_MASK) >> MMC0_PLL_SHIFT;
+		div = (con & MMC0_DIV_MASK) >> MMC0_DIV_SHIFT;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	src_rate = mux == EMMC_SEL_24M ? OSC_HZ : clk_general_rate;
+	return DIV_TO_RATE(src_rate, div) / 2;
+}
+
+static ulong rk322x_mac_set_clk(struct rk322x_cru *cru, uint freq)
+{
+	ulong ret;
+
+	/*
+	 * The gmac clock can be derived either from an external clock
+	 * or can be generated from internally by a divider from SCLK_MAC.
+	 */
+	if (readl(&cru->cru_clksel_con[5]) & BIT(5)) {
+		/* An external clock will always generate the right rate... */
+		ret = freq;
+	} else {
+		u32 con = readl(&cru->cru_clksel_con[5]);
+		ulong pll_rate;
+		u8 div;
+
+		if ((con >> MAC_PLL_SEL_SHIFT) & MAC_PLL_SEL_MASK)
+			pll_rate = GPLL_HZ;
+		else
+			/* CPLL is not set */
+			return -EPERM;
+
+		div = DIV_ROUND_UP(pll_rate, freq) - 1;
+		if (div <= 0x1f)
+			rk_clrsetreg(&cru->cru_clksel_con[5], CLK_MAC_DIV_MASK,
+				     div << CLK_MAC_DIV_SHIFT);
+		else
+			debug("Unsupported div for gmac:%d\n", div);
+
+		return DIV_TO_RATE(pll_rate, div);
+	}
+
+	return ret;
+}
+
+static ulong rockchip_mmc_set_clk(struct rk322x_cru *cru, uint clk_general_rate,
+				  int periph, uint freq)
+{
+	int src_clk_div;
+	int mux;
+
+	debug("%s: clk_general_rate=%u\n", __func__, clk_general_rate);
+
+	/* mmc clock defaulg div 2 internal, need provide double in cru */
+	src_clk_div = DIV_ROUND_UP(clk_general_rate / 2, freq);
+
+	if (src_clk_div > 128) {
+		src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, freq);
+		assert(src_clk_div - 1 < 128);
+		mux = EMMC_SEL_24M;
+	} else {
+		mux = EMMC_SEL_GPLL;
+	}
+
+	switch (periph) {
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+	case SCLK_EMMC_SAMPLE:
+		rk_clrsetreg(&cru->cru_clksel_con[11],
+			     EMMC_PLL_MASK,
+			     mux << EMMC_PLL_SHIFT);
+		rk_clrsetreg(&cru->cru_clksel_con[12],
+			     EMMC_DIV_MASK,
+			     (src_clk_div - 1) << EMMC_DIV_SHIFT);
+		break;
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		rk_clrsetreg(&cru->cru_clksel_con[11],
+			     MMC0_PLL_MASK | MMC0_DIV_MASK,
+			     mux << MMC0_PLL_SHIFT |
+			     (src_clk_div - 1) << MMC0_DIV_SHIFT);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return rockchip_mmc_get_clk(cru, clk_general_rate, periph);
+}
+
+static int rk322x_ddr_set_clk(struct rk322x_cru *cru, unsigned int set_rate)
+{
+	struct pll_div dpll_cfg;
+
+	/*  clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */
+	switch (set_rate) {
+	case 400*MHz:
+		dpll_cfg = (struct pll_div)
+		{.refdiv = 1, .fbdiv = 50, .postdiv1 = 3, .postdiv2 = 1};
+		break;
+	case 600*MHz:
+		dpll_cfg = (struct pll_div)
+		{.refdiv = 1, .fbdiv = 75, .postdiv1 = 3, .postdiv2 = 1};
+		break;
+	case 800*MHz:
+		dpll_cfg = (struct pll_div)
+		{.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1};
+		break;
+	}
+
+	/* pll enter slow-mode */
+	rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK,
+		     DPLL_MODE_SLOW << DPLL_MODE_SHIFT);
+	rkclk_set_pll(cru, CLK_DDR, &dpll_cfg);
+	/* PLL enter normal-mode */
+	rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK,
+		     DPLL_MODE_NORM << DPLL_MODE_SHIFT);
+
+	return set_rate;
+}
+static ulong rk322x_clk_get_rate(struct clk *clk)
+{
+	struct rk322x_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong rate, gclk_rate;
+
+	gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
+	switch (clk->id) {
+	case 0 ... 63:
+		rate = rkclk_pll_get_rate(priv->cru, clk->id);
+		break;
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		rate = rockchip_mmc_get_clk(priv->cru, gclk_rate, clk->id);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return rate;
+}
+
+static ulong rk322x_clk_set_rate(struct clk *clk, ulong rate)
+{
+	struct rk322x_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong new_rate, gclk_rate;
+
+	gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
+	switch (clk->id) {
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		new_rate = rockchip_mmc_set_clk(priv->cru, gclk_rate,
+						clk->id, rate);
+		break;
+	case CLK_DDR:
+		new_rate = rk322x_ddr_set_clk(priv->cru, rate);
+		break;
+	case SCLK_MAC:
+		new_rate = rk322x_mac_set_clk(priv->cru, rate);
+		break;
+	case PLL_GPLL:
+		return 0;
+	default:
+		return -ENOENT;
+	}
+
+	return new_rate;
+}
+
+static int rk322x_gmac_set_parent(struct clk *clk, struct clk *parent)
+{
+	struct rk322x_clk_priv *priv = dev_get_priv(clk->dev);
+	struct rk322x_cru *cru = priv->cru;
+
+	/*
+	 * If the requested parent is in the same clock-controller and the id
+	 * is SCLK_MAC_SRC ("sclk_gmac_src"), switch to the internal clock.
+	 */
+	if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC_SRC)) {
+		debug("%s: switching RGMII to SCLK_MAC_SRC\n", __func__);
+		rk_clrsetreg(&cru->cru_clksel_con[5], BIT(5), 0);
+		return 0;
+	}
+
+	/*
+	 * If the requested parent is in the same clock-controller and the id
+	 * is SCLK_MAC_EXTCLK (sclk_mac_extclk), switch to the external clock.
+	 */
+	if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC_EXTCLK)) {
+		debug("%s: switching RGMII to SCLK_MAC_EXTCLK\n", __func__);
+		rk_clrsetreg(&cru->cru_clksel_con[5], BIT(5), BIT(5));
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int rk322x_gmac_extclk_set_parent(struct clk *clk, struct clk *parent)
+{
+	struct rk322x_clk_priv *priv = dev_get_priv(clk->dev);
+	const char *clock_output_name;
+	struct rk322x_cru *cru = priv->cru;
+	int ret;
+
+	ret = dev_read_string_index(parent->dev, "clock-output-names",
+				    parent->id, &clock_output_name);
+	if (ret < 0)
+		return -ENODATA;
+
+	if (!strcmp(clock_output_name, "ext_gmac")) {
+		debug("%s: switching gmac extclk to ext_gmac\n", __func__);
+		rk_clrsetreg(&cru->cru_clksel_con[29], BIT(10), 0);
+		return 0;
+	} else if (!strcmp(clock_output_name, "phy_50m_out")) {
+		debug("%s: switching gmac extclk to phy_50m_out\n", __func__);
+		rk_clrsetreg(&cru->cru_clksel_con[29], BIT(10), BIT(10));
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int rk322x_clk_set_parent(struct clk *clk, struct clk *parent)
+{
+	switch (clk->id) {
+	case SCLK_MAC:
+		return rk322x_gmac_set_parent(clk, parent);
+	case SCLK_MAC_EXTCLK:
+		return rk322x_gmac_extclk_set_parent(clk, parent);
+	}
+
+	debug("%s: unsupported clk %ld\n", __func__, clk->id);
+	return -ENOENT;
+}
+
+static struct clk_ops rk322x_clk_ops = {
+	.get_rate	= rk322x_clk_get_rate,
+	.set_rate	= rk322x_clk_set_rate,
+	.set_parent	= rk322x_clk_set_parent,
+};
+
+static int rk322x_clk_ofdata_to_platdata(struct udevice *dev)
+{
+	struct rk322x_clk_priv *priv = dev_get_priv(dev);
+
+	priv->cru = dev_read_addr_ptr(dev);
+
+	return 0;
+}
+
+static int rk322x_clk_probe(struct udevice *dev)
+{
+	struct rk322x_clk_priv *priv = dev_get_priv(dev);
+
+	rkclk_init(priv->cru);
+
+	return 0;
+}
+
+static int rk322x_clk_bind(struct udevice *dev)
+{
+	int ret;
+	struct udevice *sys_child;
+	struct sysreset_reg *priv;
+
+	/* The reset driver does not have a device node, so bind it here */
+	ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
+				 &sys_child);
+	if (ret) {
+		debug("Warning: No sysreset driver: ret=%d\n", ret);
+	} else {
+		priv = malloc(sizeof(struct sysreset_reg));
+		priv->glb_srst_fst_value = offsetof(struct rk322x_cru,
+						    cru_glb_srst_fst_value);
+		priv->glb_srst_snd_value = offsetof(struct rk322x_cru,
+						    cru_glb_srst_snd_value);
+		sys_child->priv = priv;
+	}
+
+#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
+	ret = offsetof(struct rk322x_cru, cru_softrst_con[0]);
+	ret = rockchip_reset_bind(dev, ret, 9);
+	if (ret)
+		debug("Warning: software reset driver bind faile\n");
+#endif
+
+	return 0;
+}
+
+static const struct udevice_id rk322x_clk_ids[] = {
+	{ .compatible = "rockchip,rk3228-cru" },
+	{ }
+};
+
+U_BOOT_DRIVER(rockchip_rk322x_cru) = {
+	.name		= "clk_rk322x",
+	.id		= UCLASS_CLK,
+	.of_match	= rk322x_clk_ids,
+	.priv_auto_alloc_size = sizeof(struct rk322x_clk_priv),
+	.ofdata_to_platdata = rk322x_clk_ofdata_to_platdata,
+	.ops		= &rk322x_clk_ops,
+	.bind		= rk322x_clk_bind,
+	.probe		= rk322x_clk_probe,
+};

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/clk_rk3328.c

@@ -0,0 +1,818 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2017 Rockchip Electronics Co., Ltd
+ */
+
+#include <common.h>
+#include <bitfield.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <syscon.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3328.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <asm/arch-rockchip/grf_rk3328.h>
+#include <asm/io.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rk3328-cru.h>
+
+struct pll_div {
+	u32 refdiv;
+	u32 fbdiv;
+	u32 postdiv1;
+	u32 postdiv2;
+	u32 frac;
+};
+
+#define RATE_TO_DIV(input_rate, output_rate) \
+	((input_rate) / (output_rate) - 1);
+#define DIV_TO_RATE(input_rate, div)    ((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
+	.refdiv = _refdiv,\
+	.fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
+	.postdiv1 = _postdiv1, .postdiv2 = _postdiv2};
+
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 1, 4, 1);
+static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 2, 2, 1);
+
+static const struct pll_div apll_816_cfg = PLL_DIVISORS(816 * MHz, 1, 2, 1);
+static const struct pll_div apll_600_cfg = PLL_DIVISORS(600 * MHz, 1, 3, 1);
+
+static const struct pll_div *apll_cfgs[] = {
+	[APLL_816_MHZ] = &apll_816_cfg,
+	[APLL_600_MHZ] = &apll_600_cfg,
+};
+
+enum {
+	/* PLL_CON0 */
+	PLL_POSTDIV1_SHIFT		= 12,
+	PLL_POSTDIV1_MASK		= 0x7 << PLL_POSTDIV1_SHIFT,
+	PLL_FBDIV_SHIFT			= 0,
+	PLL_FBDIV_MASK			= 0xfff,
+
+	/* PLL_CON1 */
+	PLL_DSMPD_SHIFT			= 12,
+	PLL_DSMPD_MASK			= 1 << PLL_DSMPD_SHIFT,
+	PLL_INTEGER_MODE		= 1,
+	PLL_LOCK_STATUS_SHIFT		= 10,
+	PLL_LOCK_STATUS_MASK		= 1 << PLL_LOCK_STATUS_SHIFT,
+	PLL_POSTDIV2_SHIFT		= 6,
+	PLL_POSTDIV2_MASK		= 0x7 << PLL_POSTDIV2_SHIFT,
+	PLL_REFDIV_SHIFT		= 0,
+	PLL_REFDIV_MASK			= 0x3f,
+
+	/* PLL_CON2 */
+	PLL_FRACDIV_SHIFT		= 0,
+	PLL_FRACDIV_MASK		= 0xffffff,
+
+	/* MODE_CON */
+	APLL_MODE_SHIFT			= 0,
+	NPLL_MODE_SHIFT			= 1,
+	DPLL_MODE_SHIFT			= 4,
+	CPLL_MODE_SHIFT			= 8,
+	GPLL_MODE_SHIFT			= 12,
+	PLL_MODE_SLOW			= 0,
+	PLL_MODE_NORM,
+
+	/* CLKSEL_CON0 */
+	CLK_CORE_PLL_SEL_APLL		= 0,
+	CLK_CORE_PLL_SEL_GPLL,
+	CLK_CORE_PLL_SEL_DPLL,
+	CLK_CORE_PLL_SEL_NPLL,
+	CLK_CORE_PLL_SEL_SHIFT		= 6,
+	CLK_CORE_PLL_SEL_MASK		= 3 << CLK_CORE_PLL_SEL_SHIFT,
+	CLK_CORE_DIV_SHIFT		= 0,
+	CLK_CORE_DIV_MASK		= 0x1f,
+
+	/* CLKSEL_CON1 */
+	ACLKM_CORE_DIV_SHIFT		= 4,
+	ACLKM_CORE_DIV_MASK		= 0x7 << ACLKM_CORE_DIV_SHIFT,
+	PCLK_DBG_DIV_SHIFT		= 0,
+	PCLK_DBG_DIV_MASK		= 0xF << PCLK_DBG_DIV_SHIFT,
+
+	/* CLKSEL_CON27 */
+	GMAC2IO_PLL_SEL_SHIFT		= 7,
+	GMAC2IO_PLL_SEL_MASK		= 1 << GMAC2IO_PLL_SEL_SHIFT,
+	GMAC2IO_PLL_SEL_CPLL		= 0,
+	GMAC2IO_PLL_SEL_GPLL		= 1,
+	GMAC2IO_CLK_DIV_MASK		= 0x1f,
+	GMAC2IO_CLK_DIV_SHIFT		= 0,
+
+	/* CLKSEL_CON28 */
+	ACLK_PERIHP_PLL_SEL_CPLL	= 0,
+	ACLK_PERIHP_PLL_SEL_GPLL,
+	ACLK_PERIHP_PLL_SEL_HDMIPHY,
+	ACLK_PERIHP_PLL_SEL_SHIFT	= 6,
+	ACLK_PERIHP_PLL_SEL_MASK	= 3 << ACLK_PERIHP_PLL_SEL_SHIFT,
+	ACLK_PERIHP_DIV_CON_SHIFT	= 0,
+	ACLK_PERIHP_DIV_CON_MASK	= 0x1f,
+
+	/* CLKSEL_CON29 */
+	PCLK_PERIHP_DIV_CON_SHIFT	= 4,
+	PCLK_PERIHP_DIV_CON_MASK	= 0x7 << PCLK_PERIHP_DIV_CON_SHIFT,
+	HCLK_PERIHP_DIV_CON_SHIFT	= 0,
+	HCLK_PERIHP_DIV_CON_MASK	= 3 << HCLK_PERIHP_DIV_CON_SHIFT,
+
+	/* CLKSEL_CON22 */
+	CLK_TSADC_DIV_CON_SHIFT		= 0,
+	CLK_TSADC_DIV_CON_MASK		= 0x3ff,
+
+	/* CLKSEL_CON23 */
+	CLK_SARADC_DIV_CON_SHIFT	= 0,
+	CLK_SARADC_DIV_CON_MASK		= GENMASK(9, 0),
+	CLK_SARADC_DIV_CON_WIDTH	= 10,
+
+	/* CLKSEL_CON24 */
+	CLK_PWM_PLL_SEL_CPLL		= 0,
+	CLK_PWM_PLL_SEL_GPLL,
+	CLK_PWM_PLL_SEL_SHIFT		= 15,
+	CLK_PWM_PLL_SEL_MASK		= 1 << CLK_PWM_PLL_SEL_SHIFT,
+	CLK_PWM_DIV_CON_SHIFT		= 8,
+	CLK_PWM_DIV_CON_MASK		= 0x7f << CLK_PWM_DIV_CON_SHIFT,
+
+	CLK_SPI_PLL_SEL_CPLL		= 0,
+	CLK_SPI_PLL_SEL_GPLL,
+	CLK_SPI_PLL_SEL_SHIFT		= 7,
+	CLK_SPI_PLL_SEL_MASK		= 1 << CLK_SPI_PLL_SEL_SHIFT,
+	CLK_SPI_DIV_CON_SHIFT		= 0,
+	CLK_SPI_DIV_CON_MASK		= 0x7f << CLK_SPI_DIV_CON_SHIFT,
+
+	/* CLKSEL_CON30 */
+	CLK_SDMMC_PLL_SEL_CPLL		= 0,
+	CLK_SDMMC_PLL_SEL_GPLL,
+	CLK_SDMMC_PLL_SEL_24M,
+	CLK_SDMMC_PLL_SEL_USBPHY,
+	CLK_SDMMC_PLL_SHIFT		= 8,
+	CLK_SDMMC_PLL_MASK		= 0x3 << CLK_SDMMC_PLL_SHIFT,
+	CLK_SDMMC_DIV_CON_SHIFT          = 0,
+	CLK_SDMMC_DIV_CON_MASK           = 0xff << CLK_SDMMC_DIV_CON_SHIFT,
+
+	/* CLKSEL_CON32 */
+	CLK_EMMC_PLL_SEL_CPLL		= 0,
+	CLK_EMMC_PLL_SEL_GPLL,
+	CLK_EMMC_PLL_SEL_24M,
+	CLK_EMMC_PLL_SEL_USBPHY,
+	CLK_EMMC_PLL_SHIFT		= 8,
+	CLK_EMMC_PLL_MASK		= 0x3 << CLK_EMMC_PLL_SHIFT,
+	CLK_EMMC_DIV_CON_SHIFT          = 0,
+	CLK_EMMC_DIV_CON_MASK           = 0xff << CLK_EMMC_DIV_CON_SHIFT,
+
+	/* CLKSEL_CON34 */
+	CLK_I2C_PLL_SEL_CPLL		= 0,
+	CLK_I2C_PLL_SEL_GPLL,
+	CLK_I2C_DIV_CON_MASK		= 0x7f,
+	CLK_I2C_PLL_SEL_MASK		= 1,
+	CLK_I2C1_PLL_SEL_SHIFT		= 15,
+	CLK_I2C1_DIV_CON_SHIFT		= 8,
+	CLK_I2C0_PLL_SEL_SHIFT		= 7,
+	CLK_I2C0_DIV_CON_SHIFT		= 0,
+
+	/* CLKSEL_CON35 */
+	CLK_I2C3_PLL_SEL_SHIFT		= 15,
+	CLK_I2C3_DIV_CON_SHIFT		= 8,
+	CLK_I2C2_PLL_SEL_SHIFT		= 7,
+	CLK_I2C2_DIV_CON_SHIFT		= 0,
+};
+
+#define VCO_MAX_KHZ	(3200 * (MHz / KHz))
+#define VCO_MIN_KHZ	(800 * (MHz / KHz))
+#define OUTPUT_MAX_KHZ	(3200 * (MHz / KHz))
+#define OUTPUT_MIN_KHZ	(16 * (MHz / KHz))
+
+/*
+ *  the div restructions of pll in integer mode, these are defined in
+ *  * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0
+ */
+#define PLL_DIV_MIN	16
+#define PLL_DIV_MAX	3200
+
+/*
+ * How to calculate the PLL(from TRM V0.3 Part 1 Page 63):
+ * Formulas also embedded within the Fractional PLL Verilog model:
+ * If DSMPD = 1 (DSM is disabled, "integer mode")
+ * FOUTVCO = FREF / REFDIV * FBDIV
+ * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2
+ * Where:
+ * FOUTVCO = Fractional PLL non-divided output frequency
+ * FOUTPOSTDIV = Fractional PLL divided output frequency
+ *               (output of second post divider)
+ * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input)
+ * REFDIV = Fractional PLL input reference clock divider
+ * FBDIV = Integer value programmed into feedback divide
+ *
+ */
+static void rkclk_set_pll(struct rk3328_cru *cru, enum rk_clk_id clk_id,
+			const struct pll_div *div)
+{
+	u32 *pll_con;
+	u32 mode_shift, mode_mask;
+
+	pll_con = NULL;
+	mode_shift = 0;
+	switch (clk_id) {
+	case CLK_ARM:
+		pll_con = cru->apll_con;
+		mode_shift = APLL_MODE_SHIFT;
+		break;
+	case CLK_DDR:
+		pll_con = cru->dpll_con;
+		mode_shift = DPLL_MODE_SHIFT;
+		break;
+	case CLK_CODEC:
+		pll_con = cru->cpll_con;
+		mode_shift = CPLL_MODE_SHIFT;
+		break;
+	case CLK_GENERAL:
+		pll_con = cru->gpll_con;
+		mode_shift = GPLL_MODE_SHIFT;
+		break;
+	case CLK_NEW:
+		pll_con = cru->npll_con;
+		mode_shift = NPLL_MODE_SHIFT;
+		break;
+	default:
+		break;
+	}
+	mode_mask = 1 << mode_shift;
+
+	/* All 8 PLLs have same VCO and output frequency range restrictions. */
+	u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv;
+	u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2;
+
+	debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, \
+	      postdiv2=%d, vco=%u khz, output=%u khz\n",
+	      pll_con, div->fbdiv, div->refdiv, div->postdiv1,
+	      div->postdiv2, vco_khz, output_khz);
+	assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ &&
+	       output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ &&
+	       div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX);
+
+	/*
+	 * When power on or changing PLL setting,
+	 * we must force PLL into slow mode to ensure output stable clock.
+	 */
+	rk_clrsetreg(&cru->mode_con, mode_mask, PLL_MODE_SLOW << mode_shift);
+
+	/* use integer mode */
+	rk_clrsetreg(&pll_con[1], PLL_DSMPD_MASK,
+		     PLL_INTEGER_MODE << PLL_DSMPD_SHIFT);
+
+	rk_clrsetreg(&pll_con[0],
+		     PLL_FBDIV_MASK | PLL_POSTDIV1_MASK,
+		     (div->fbdiv << PLL_FBDIV_SHIFT) |
+		     (div->postdiv1 << PLL_POSTDIV1_SHIFT));
+	rk_clrsetreg(&pll_con[1],
+		     PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
+		     (div->postdiv2 << PLL_POSTDIV2_SHIFT) |
+		     (div->refdiv << PLL_REFDIV_SHIFT));
+
+	/* waiting for pll lock */
+	while (!(readl(&pll_con[1]) & (1 << PLL_LOCK_STATUS_SHIFT)))
+		udelay(1);
+
+	/* pll enter normal mode */
+	rk_clrsetreg(&cru->mode_con, mode_mask, PLL_MODE_NORM << mode_shift);
+}
+
+static void rkclk_init(struct rk3328_cru *cru)
+{
+	u32 aclk_div;
+	u32 hclk_div;
+	u32 pclk_div;
+
+	rk3328_configure_cpu(cru, APLL_600_MHZ);
+
+	/* configure gpll cpll */
+	rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
+	rkclk_set_pll(cru, CLK_CODEC, &cpll_init_cfg);
+
+	/* configure perihp aclk, hclk, pclk */
+	aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1;
+	hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1;
+	pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1;
+
+	rk_clrsetreg(&cru->clksel_con[28],
+		     ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK,
+		     ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT |
+		     aclk_div << ACLK_PERIHP_DIV_CON_SHIFT);
+	rk_clrsetreg(&cru->clksel_con[29],
+		     PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK,
+		     pclk_div << PCLK_PERIHP_DIV_CON_SHIFT |
+		     hclk_div << HCLK_PERIHP_DIV_CON_SHIFT);
+}
+
+void rk3328_configure_cpu(struct rk3328_cru *cru,
+			  enum apll_frequencies apll_freq)
+{
+	u32 clk_core_div;
+	u32 aclkm_div;
+	u32 pclk_dbg_div;
+
+	rkclk_set_pll(cru, CLK_ARM, apll_cfgs[apll_freq]);
+
+	clk_core_div = APLL_HZ / CLK_CORE_HZ - 1;
+	aclkm_div = APLL_HZ / ACLKM_CORE_HZ / (clk_core_div + 1) - 1;
+	pclk_dbg_div = APLL_HZ / PCLK_DBG_HZ / (clk_core_div + 1) - 1;
+
+	rk_clrsetreg(&cru->clksel_con[0],
+		     CLK_CORE_PLL_SEL_MASK | CLK_CORE_DIV_MASK,
+		     CLK_CORE_PLL_SEL_APLL << CLK_CORE_PLL_SEL_SHIFT |
+		     clk_core_div << CLK_CORE_DIV_SHIFT);
+
+	rk_clrsetreg(&cru->clksel_con[1],
+		     PCLK_DBG_DIV_MASK | ACLKM_CORE_DIV_MASK,
+		     pclk_dbg_div << PCLK_DBG_DIV_SHIFT |
+		     aclkm_div << ACLKM_CORE_DIV_SHIFT);
+}
+
+
+static ulong rk3328_i2c_get_clk(struct rk3328_cru *cru, ulong clk_id)
+{
+	u32 div, con;
+
+	switch (clk_id) {
+	case SCLK_I2C0:
+		con = readl(&cru->clksel_con[34]);
+		div = con >> CLK_I2C0_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
+		break;
+	case SCLK_I2C1:
+		con = readl(&cru->clksel_con[34]);
+		div = con >> CLK_I2C1_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
+		break;
+	case SCLK_I2C2:
+		con = readl(&cru->clksel_con[35]);
+		div = con >> CLK_I2C2_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
+		break;
+	case SCLK_I2C3:
+		con = readl(&cru->clksel_con[35]);
+		div = con >> CLK_I2C3_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
+		break;
+	default:
+		printf("do not support this i2c bus\n");
+		return -EINVAL;
+	}
+
+	return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rk3328_i2c_set_clk(struct rk3328_cru *cru, ulong clk_id, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = GPLL_HZ / hz;
+	assert(src_clk_div - 1 < 127);
+
+	switch (clk_id) {
+	case SCLK_I2C0:
+		rk_clrsetreg(&cru->clksel_con[34],
+			     CLK_I2C_DIV_CON_MASK << CLK_I2C0_DIV_CON_SHIFT |
+			     CLK_I2C_PLL_SEL_MASK << CLK_I2C0_PLL_SEL_SHIFT,
+			     (src_clk_div - 1) << CLK_I2C0_DIV_CON_SHIFT |
+			     CLK_I2C_PLL_SEL_GPLL << CLK_I2C0_PLL_SEL_SHIFT);
+		break;
+	case SCLK_I2C1:
+		rk_clrsetreg(&cru->clksel_con[34],
+			     CLK_I2C_DIV_CON_MASK << CLK_I2C1_DIV_CON_SHIFT |
+			     CLK_I2C_PLL_SEL_MASK << CLK_I2C1_PLL_SEL_SHIFT,
+			     (src_clk_div - 1) << CLK_I2C1_DIV_CON_SHIFT |
+			     CLK_I2C_PLL_SEL_GPLL << CLK_I2C1_PLL_SEL_SHIFT);
+		break;
+	case SCLK_I2C2:
+		rk_clrsetreg(&cru->clksel_con[35],
+			     CLK_I2C_DIV_CON_MASK << CLK_I2C2_DIV_CON_SHIFT |
+			     CLK_I2C_PLL_SEL_MASK << CLK_I2C2_PLL_SEL_SHIFT,
+			     (src_clk_div - 1) << CLK_I2C2_DIV_CON_SHIFT |
+			     CLK_I2C_PLL_SEL_GPLL << CLK_I2C2_PLL_SEL_SHIFT);
+		break;
+	case SCLK_I2C3:
+		rk_clrsetreg(&cru->clksel_con[35],
+			     CLK_I2C_DIV_CON_MASK << CLK_I2C3_DIV_CON_SHIFT |
+			     CLK_I2C_PLL_SEL_MASK << CLK_I2C3_PLL_SEL_SHIFT,
+			     (src_clk_div - 1) << CLK_I2C3_DIV_CON_SHIFT |
+			     CLK_I2C_PLL_SEL_GPLL << CLK_I2C3_PLL_SEL_SHIFT);
+		break;
+	default:
+		printf("do not support this i2c bus\n");
+		return -EINVAL;
+	}
+
+	return DIV_TO_RATE(GPLL_HZ, src_clk_div);
+}
+
+static ulong rk3328_gmac2io_set_clk(struct rk3328_cru *cru, ulong rate)
+{
+	struct rk3328_grf_regs *grf;
+	ulong ret;
+
+	grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+
+	/*
+	 * The RGMII CLK can be derived either from an external "clkin"
+	 * or can be generated from internally by a divider from SCLK_MAC.
+	 */
+	if (readl(&grf->mac_con[1]) & BIT(10) &&
+	    readl(&grf->soc_con[4]) & BIT(14)) {
+		/* An external clock will always generate the right rate... */
+		ret = rate;
+	} else {
+		u32 con = readl(&cru->clksel_con[27]);
+		ulong pll_rate;
+		u8 div;
+
+		if ((con >> GMAC2IO_PLL_SEL_SHIFT) & GMAC2IO_PLL_SEL_GPLL)
+			pll_rate = GPLL_HZ;
+		else
+			pll_rate = CPLL_HZ;
+
+		div = DIV_ROUND_UP(pll_rate, rate) - 1;
+		if (div <= 0x1f)
+			rk_clrsetreg(&cru->clksel_con[27], GMAC2IO_CLK_DIV_MASK,
+				     div << GMAC2IO_CLK_DIV_SHIFT);
+		else
+			debug("Unsupported div for gmac:%d\n", div);
+
+		return DIV_TO_RATE(pll_rate, div);
+	}
+
+	return ret;
+}
+
+static ulong rk3328_mmc_get_clk(struct rk3328_cru *cru, uint clk_id)
+{
+	u32 div, con, con_id;
+
+	switch (clk_id) {
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		con_id = 30;
+		break;
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+		con_id = 32;
+		break;
+	default:
+		return -EINVAL;
+	}
+	con = readl(&cru->clksel_con[con_id]);
+	div = (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT;
+
+	if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT
+	    == CLK_EMMC_PLL_SEL_24M)
+		return DIV_TO_RATE(OSC_HZ, div) / 2;
+	else
+		return DIV_TO_RATE(GPLL_HZ, div) / 2;
+}
+
+static ulong rk3328_mmc_set_clk(struct rk3328_cru *cru,
+				ulong clk_id, ulong set_rate)
+{
+	int src_clk_div;
+	u32 con_id;
+
+	switch (clk_id) {
+	case HCLK_SDMMC:
+	case SCLK_SDMMC:
+		con_id = 30;
+		break;
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+		con_id = 32;
+		break;
+	default:
+		return -EINVAL;
+	}
+	/* Select clk_sdmmc/emmc source from GPLL by default */
+	/* mmc clock defaulg div 2 internal, need provide double in cru */
+	src_clk_div = DIV_ROUND_UP(GPLL_HZ / 2, set_rate);
+
+	if (src_clk_div > 127) {
+		/* use 24MHz source for 400KHz clock */
+		src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate);
+		rk_clrsetreg(&cru->clksel_con[con_id],
+			     CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
+			     CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT |
+			     (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
+	} else {
+		rk_clrsetreg(&cru->clksel_con[con_id],
+			     CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
+			     CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
+			     (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
+	}
+
+	return rk3328_mmc_get_clk(cru, clk_id);
+}
+
+static ulong rk3328_pwm_get_clk(struct rk3328_cru *cru)
+{
+	u32 div, con;
+
+	con = readl(&cru->clksel_con[24]);
+	div = (con & CLK_PWM_DIV_CON_MASK) >> CLK_PWM_DIV_CON_SHIFT;
+
+	return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rk3328_pwm_set_clk(struct rk3328_cru *cru, uint hz)
+{
+	u32 div = GPLL_HZ / hz;
+
+	rk_clrsetreg(&cru->clksel_con[24],
+		     CLK_PWM_PLL_SEL_MASK | CLK_PWM_DIV_CON_MASK,
+		     CLK_PWM_PLL_SEL_GPLL << CLK_PWM_PLL_SEL_SHIFT |
+		     (div - 1) << CLK_PWM_DIV_CON_SHIFT);
+
+	return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rk3328_saradc_get_clk(struct rk3328_cru *cru)
+{
+	u32 div, val;
+
+	val = readl(&cru->clksel_con[23]);
+	div = bitfield_extract(val, CLK_SARADC_DIV_CON_SHIFT,
+			       CLK_SARADC_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(OSC_HZ, div);
+}
+
+static ulong rk3328_saradc_set_clk(struct rk3328_cru *cru, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1;
+	assert(src_clk_div < 128);
+
+	rk_clrsetreg(&cru->clksel_con[23],
+		     CLK_SARADC_DIV_CON_MASK,
+		     src_clk_div << CLK_SARADC_DIV_CON_SHIFT);
+
+	return rk3328_saradc_get_clk(cru);
+}
+
+static ulong rk3328_clk_get_rate(struct clk *clk)
+{
+	struct rk3328_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong rate = 0;
+
+	switch (clk->id) {
+	case 0 ... 29:
+		return 0;
+	case HCLK_SDMMC:
+	case HCLK_EMMC:
+	case SCLK_SDMMC:
+	case SCLK_EMMC:
+		rate = rk3328_mmc_get_clk(priv->cru, clk->id);
+		break;
+	case SCLK_I2C0:
+	case SCLK_I2C1:
+	case SCLK_I2C2:
+	case SCLK_I2C3:
+		rate = rk3328_i2c_get_clk(priv->cru, clk->id);
+		break;
+	case SCLK_PWM:
+		rate = rk3328_pwm_get_clk(priv->cru);
+		break;
+	case SCLK_SARADC:
+		rate = rk3328_saradc_get_clk(priv->cru);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return rate;
+}
+
+static ulong rk3328_clk_set_rate(struct clk *clk, ulong rate)
+{
+	struct rk3328_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong ret = 0;
+
+	switch (clk->id) {
+	case 0 ... 29:
+		return 0;
+	case HCLK_SDMMC:
+	case HCLK_EMMC:
+	case SCLK_SDMMC:
+	case SCLK_EMMC:
+		ret = rk3328_mmc_set_clk(priv->cru, clk->id, rate);
+		break;
+	case SCLK_I2C0:
+	case SCLK_I2C1:
+	case SCLK_I2C2:
+	case SCLK_I2C3:
+		ret = rk3328_i2c_set_clk(priv->cru, clk->id, rate);
+		break;
+	case SCLK_MAC2IO:
+		ret = rk3328_gmac2io_set_clk(priv->cru, rate);
+		break;
+	case SCLK_PWM:
+		ret = rk3328_pwm_set_clk(priv->cru, rate);
+		break;
+	case SCLK_SARADC:
+		ret = rk3328_saradc_set_clk(priv->cru, rate);
+		break;
+	case DCLK_LCDC:
+	case SCLK_PDM:
+	case SCLK_RTC32K:
+	case SCLK_UART0:
+	case SCLK_UART1:
+	case SCLK_UART2:
+	case SCLK_SDIO:
+	case SCLK_TSP:
+	case SCLK_WIFI:
+	case ACLK_BUS_PRE:
+	case HCLK_BUS_PRE:
+	case PCLK_BUS_PRE:
+	case ACLK_PERI_PRE:
+	case HCLK_PERI:
+	case PCLK_PERI:
+	case ACLK_VIO_PRE:
+	case HCLK_VIO_PRE:
+	case ACLK_RGA_PRE:
+	case SCLK_RGA:
+	case ACLK_VOP_PRE:
+	case ACLK_RKVDEC_PRE:
+	case ACLK_RKVENC:
+	case ACLK_VPU_PRE:
+	case SCLK_VDEC_CABAC:
+	case SCLK_VDEC_CORE:
+	case SCLK_VENC_CORE:
+	case SCLK_VENC_DSP:
+	case SCLK_EFUSE:
+	case PCLK_DDR:
+	case ACLK_GMAC:
+	case PCLK_GMAC:
+	case SCLK_USB3OTG_SUSPEND:
+		return 0;
+	default:
+		return -ENOENT;
+	}
+
+	return ret;
+}
+
+static int rk3328_gmac2io_set_parent(struct clk *clk, struct clk *parent)
+{
+	struct rk3328_grf_regs *grf;
+	const char *clock_output_name;
+	int ret;
+
+	grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+
+	/*
+	 * If the requested parent is in the same clock-controller and the id
+	 * is SCLK_MAC2IO_SRC ("clk_mac2io_src"), switch to the internal clock.
+	 */
+	if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC2IO_SRC)) {
+		debug("%s: switching RGMII to SCLK_MAC2IO_SRC\n", __func__);
+		rk_clrreg(&grf->mac_con[1], BIT(10));
+		return 0;
+	}
+
+	/*
+	 * Otherwise, we need to check the clock-output-names of the
+	 * requested parent to see if the requested id is "gmac_clkin".
+	 */
+	ret = dev_read_string_index(parent->dev, "clock-output-names",
+				    parent->id, &clock_output_name);
+	if (ret < 0)
+		return -ENODATA;
+
+	/* If this is "gmac_clkin", switch to the external clock input */
+	if (!strcmp(clock_output_name, "gmac_clkin")) {
+		debug("%s: switching RGMII to CLKIN\n", __func__);
+		rk_setreg(&grf->mac_con[1], BIT(10));
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int rk3328_gmac2io_ext_set_parent(struct clk *clk, struct clk *parent)
+{
+	struct rk3328_grf_regs *grf;
+	const char *clock_output_name;
+	int ret;
+
+	grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+
+	/*
+	 * If the requested parent is in the same clock-controller and the id
+	 * is SCLK_MAC2IO ("clk_mac2io"), switch to the internal clock.
+	 */
+	if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC2IO)) {
+		debug("%s: switching RGMII to SCLK_MAC2IO\n", __func__);
+		rk_clrreg(&grf->soc_con[4], BIT(14));
+		return 0;
+	}
+
+	/*
+	 * Otherwise, we need to check the clock-output-names of the
+	 * requested parent to see if the requested id is "gmac_clkin".
+	 */
+	ret = dev_read_string_index(parent->dev, "clock-output-names",
+				    parent->id, &clock_output_name);
+	if (ret < 0)
+		return -ENODATA;
+
+	/* If this is "gmac_clkin", switch to the external clock input */
+	if (!strcmp(clock_output_name, "gmac_clkin")) {
+		debug("%s: switching RGMII to CLKIN\n", __func__);
+		rk_setreg(&grf->soc_con[4], BIT(14));
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int rk3328_clk_set_parent(struct clk *clk, struct clk *parent)
+{
+	switch (clk->id) {
+	case SCLK_MAC2IO:
+		return rk3328_gmac2io_set_parent(clk, parent);
+	case SCLK_MAC2IO_EXT:
+		return rk3328_gmac2io_ext_set_parent(clk, parent);
+	case DCLK_LCDC:
+	case SCLK_PDM:
+	case SCLK_RTC32K:
+	case SCLK_UART0:
+	case SCLK_UART1:
+	case SCLK_UART2:
+		return 0;
+	}
+
+	debug("%s: unsupported clk %ld\n", __func__, clk->id);
+	return -ENOENT;
+}
+
+static struct clk_ops rk3328_clk_ops = {
+	.get_rate = rk3328_clk_get_rate,
+	.set_rate = rk3328_clk_set_rate,
+	.set_parent = rk3328_clk_set_parent,
+};
+
+static int rk3328_clk_probe(struct udevice *dev)
+{
+	struct rk3328_clk_priv *priv = dev_get_priv(dev);
+
+	rkclk_init(priv->cru);
+
+	return 0;
+}
+
+static int rk3328_clk_ofdata_to_platdata(struct udevice *dev)
+{
+	struct rk3328_clk_priv *priv = dev_get_priv(dev);
+
+	priv->cru = dev_read_addr_ptr(dev);
+
+	return 0;
+}
+
+static int rk3328_clk_bind(struct udevice *dev)
+{
+	int ret;
+	struct udevice *sys_child;
+	struct sysreset_reg *priv;
+
+	/* The reset driver does not have a device node, so bind it here */
+	ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
+				 &sys_child);
+	if (ret) {
+		debug("Warning: No sysreset driver: ret=%d\n", ret);
+	} else {
+		priv = malloc(sizeof(struct sysreset_reg));
+		priv->glb_srst_fst_value = offsetof(struct rk3328_cru,
+						    glb_srst_fst_value);
+		priv->glb_srst_snd_value = offsetof(struct rk3328_cru,
+						    glb_srst_snd_value);
+		sys_child->priv = priv;
+	}
+
+#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
+	ret = offsetof(struct rk3328_cru, softrst_con[0]);
+	ret = rockchip_reset_bind(dev, ret, 12);
+	if (ret)
+		debug("Warning: software reset driver bind faile\n");
+#endif
+
+	return ret;
+}
+
+static const struct udevice_id rk3328_clk_ids[] = {
+	{ .compatible = "rockchip,rk3328-cru" },
+	{ }
+};
+
+U_BOOT_DRIVER(rockchip_rk3328_cru) = {
+	.name		= "rockchip_rk3328_cru",
+	.id		= UCLASS_CLK,
+	.of_match	= rk3328_clk_ids,
+	.priv_auto_alloc_size = sizeof(struct rk3328_clk_priv),
+	.ofdata_to_platdata = rk3328_clk_ofdata_to_platdata,
+	.ops		= &rk3328_clk_ops,
+	.bind		= rk3328_clk_bind,
+	.probe		= rk3328_clk_probe,
+};

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/clk_rk3368.c

@@ -0,0 +1,650 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2017 Rockchip Electronics Co., Ltd
+ * Author: Andy Yan <andy.yan@rock-chips.com>
+ * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dt-structs.h>
+#include <errno.h>
+#include <mapmem.h>
+#include <syscon.h>
+#include <bitfield.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3368.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <asm/io.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rk3368-cru.h>
+
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+struct rk3368_clk_plat {
+	struct dtd_rockchip_rk3368_cru dtd;
+};
+#endif
+
+struct pll_div {
+	u32 nr;
+	u32 nf;
+	u32 no;
+};
+
+#define OSC_HZ		(24 * 1000 * 1000)
+#define APLL_L_HZ	(800 * 1000 * 1000)
+#define APLL_B_HZ	(816 * 1000 * 1000)
+#define GPLL_HZ		(576 * 1000 * 1000)
+#define CPLL_HZ		(400 * 1000 * 1000)
+
+#define DIV_TO_RATE(input_rate, div)    ((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _nr, _no) { \
+	.nr = _nr, .nf = (u32)((u64)hz * _nr * _no / OSC_HZ), .no = _no}; \
+	_Static_assert(((u64)hz * _nr * _no / OSC_HZ) * OSC_HZ /\
+		       (_nr * _no) == hz, #hz "Hz cannot be hit with PLL " \
+		       "divisors on line " __stringify(__LINE__));
+
+#if IS_ENABLED(CONFIG_SPL_BUILD) || IS_ENABLED(CONFIG_TPL_BUILD)
+static const struct pll_div apll_l_init_cfg = PLL_DIVISORS(APLL_L_HZ, 12, 2);
+static const struct pll_div apll_b_init_cfg = PLL_DIVISORS(APLL_B_HZ, 1, 2);
+#if !defined(CONFIG_TPL_BUILD)
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 1, 2);
+static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 6);
+#endif
+#endif
+
+static ulong rk3368_clk_get_rate(struct clk *clk);
+
+/* Get pll rate by id */
+static uint32_t rkclk_pll_get_rate(struct rk3368_cru *cru,
+				   enum rk3368_pll_id pll_id)
+{
+	uint32_t nr, no, nf;
+	uint32_t con;
+	struct rk3368_pll *pll = &cru->pll[pll_id];
+
+	con = readl(&pll->con3);
+
+	switch ((con & PLL_MODE_MASK) >> PLL_MODE_SHIFT) {
+	case PLL_MODE_SLOW:
+		return OSC_HZ;
+	case PLL_MODE_NORMAL:
+		con = readl(&pll->con0);
+		no = ((con & PLL_OD_MASK) >> PLL_OD_SHIFT) + 1;
+		nr = ((con & PLL_NR_MASK) >> PLL_NR_SHIFT) + 1;
+		con = readl(&pll->con1);
+		nf = ((con & PLL_NF_MASK) >> PLL_NF_SHIFT) + 1;
+
+		return (24 * nf / (nr * no)) * 1000000;
+	case PLL_MODE_DEEP_SLOW:
+	default:
+		return 32768;
+	}
+}
+
+#if IS_ENABLED(CONFIG_SPL_BUILD) || IS_ENABLED(CONFIG_TPL_BUILD)
+static int rkclk_set_pll(struct rk3368_cru *cru, enum rk3368_pll_id pll_id,
+			 const struct pll_div *div)
+{
+	struct rk3368_pll *pll = &cru->pll[pll_id];
+	/* All PLLs have same VCO and output frequency range restrictions*/
+	uint vco_hz = OSC_HZ / 1000 * div->nf / div->nr * 1000;
+	uint output_hz = vco_hz / div->no;
+
+	debug("PLL at %p: nf=%d, nr=%d, no=%d, vco=%u Hz, output=%u Hz\n",
+	      pll, div->nf, div->nr, div->no, vco_hz, output_hz);
+
+	/* enter slow mode and reset pll */
+	rk_clrsetreg(&pll->con3, PLL_MODE_MASK | PLL_RESET_MASK,
+		     PLL_RESET << PLL_RESET_SHIFT);
+
+	rk_clrsetreg(&pll->con0, PLL_NR_MASK | PLL_OD_MASK,
+		     ((div->nr - 1) << PLL_NR_SHIFT) |
+		     ((div->no - 1) << PLL_OD_SHIFT));
+	writel((div->nf - 1) << PLL_NF_SHIFT, &pll->con1);
+	/*
+	 * BWADJ should be set to NF / 2 to ensure the nominal bandwidth.
+	 * Compare the RK3368 TRM, section "3.6.4 PLL Bandwidth Adjustment".
+	 */
+	clrsetbits_le32(&pll->con2, PLL_BWADJ_MASK, (div->nf >> 1) - 1);
+
+	udelay(10);
+
+	/* return from reset */
+	rk_clrreg(&pll->con3, PLL_RESET_MASK);
+
+	/* waiting for pll lock */
+	while (!(readl(&pll->con1) & PLL_LOCK_STA))
+		udelay(1);
+
+	rk_clrsetreg(&pll->con3, PLL_MODE_MASK,
+		     PLL_MODE_NORMAL << PLL_MODE_SHIFT);
+
+	return 0;
+}
+#endif
+
+#if IS_ENABLED(CONFIG_SPL_BUILD) || IS_ENABLED(CONFIG_TPL_BUILD)
+static void rkclk_init(struct rk3368_cru *cru)
+{
+	u32 apllb, aplll, dpll, cpll, gpll;
+
+	rkclk_set_pll(cru, APLLB, &apll_b_init_cfg);
+	rkclk_set_pll(cru, APLLL, &apll_l_init_cfg);
+#if !defined(CONFIG_TPL_BUILD)
+	/*
+	 * If we plan to return to the boot ROM, we can't increase the
+	 * GPLL rate from the SPL stage.
+	 */
+	rkclk_set_pll(cru, GPLL, &gpll_init_cfg);
+	rkclk_set_pll(cru, CPLL, &cpll_init_cfg);
+#endif
+
+	apllb = rkclk_pll_get_rate(cru, APLLB);
+	aplll = rkclk_pll_get_rate(cru, APLLL);
+	dpll = rkclk_pll_get_rate(cru, DPLL);
+	cpll = rkclk_pll_get_rate(cru, CPLL);
+	gpll = rkclk_pll_get_rate(cru, GPLL);
+
+	debug("%s apllb(%d) apll(%d) dpll(%d) cpll(%d) gpll(%d)\n",
+	       __func__, apllb, aplll, dpll, cpll, gpll);
+}
+#endif
+
+#if !IS_ENABLED(CONFIG_SPL_BUILD) || CONFIG_IS_ENABLED(MMC_SUPPORT)
+static ulong rk3368_mmc_get_clk(struct rk3368_cru *cru, uint clk_id)
+{
+	u32 div, con, con_id, rate;
+	u32 pll_rate;
+
+	switch (clk_id) {
+	case HCLK_SDMMC:
+		con_id = 50;
+		break;
+	case HCLK_EMMC:
+		con_id = 51;
+		break;
+	case SCLK_SDIO0:
+		con_id = 48;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	con = readl(&cru->clksel_con[con_id]);
+	switch (con & MMC_PLL_SEL_MASK) {
+	case MMC_PLL_SEL_GPLL:
+		pll_rate = rkclk_pll_get_rate(cru, GPLL);
+		break;
+	case MMC_PLL_SEL_24M:
+		pll_rate = OSC_HZ;
+		break;
+	case MMC_PLL_SEL_CPLL:
+		pll_rate = rkclk_pll_get_rate(cru, CPLL);
+		break;
+	case MMC_PLL_SEL_USBPHY_480M:
+	default:
+		return -EINVAL;
+	}
+	div = (con & MMC_CLK_DIV_MASK) >> MMC_CLK_DIV_SHIFT;
+	rate = DIV_TO_RATE(pll_rate, div);
+
+	debug("%s: raw rate %d (post-divide by 2)\n", __func__, rate);
+	return rate >> 1;
+}
+
+static ulong rk3368_mmc_find_best_rate_and_parent(struct clk *clk,
+						  ulong rate,
+						  u32 *best_mux,
+						  u32 *best_div)
+{
+	int i;
+	ulong best_rate = 0;
+	const ulong MHz = 1000000;
+	const struct {
+		u32 mux;
+		ulong rate;
+	} parents[] = {
+		{ .mux = MMC_PLL_SEL_CPLL, .rate = CPLL_HZ },
+		{ .mux = MMC_PLL_SEL_GPLL, .rate = GPLL_HZ },
+		{ .mux = MMC_PLL_SEL_24M,  .rate = 24 * MHz }
+	};
+
+	debug("%s: target rate %ld\n", __func__, rate);
+	for (i = 0; i < ARRAY_SIZE(parents); ++i) {
+		/*
+		 * Find the largest rate no larger than the target-rate for
+		 * the current parent.
+		 */
+		ulong parent_rate = parents[i].rate;
+		u32 div = DIV_ROUND_UP(parent_rate, rate);
+		u32 adj_div = div;
+		ulong new_rate = parent_rate / adj_div;
+
+		debug("%s: rate %ld, parent-mux %d, parent-rate %ld, div %d\n",
+		      __func__, rate, parents[i].mux, parents[i].rate, div);
+
+		/* Skip, if not representable */
+		if ((div - 1) > MMC_CLK_DIV_MASK)
+			continue;
+
+		/* Skip, if we already have a better (or equal) solution */
+		if (new_rate <= best_rate)
+			continue;
+
+		/* This is our new best rate. */
+		best_rate = new_rate;
+		*best_mux = parents[i].mux;
+		*best_div = div - 1;
+	}
+
+	debug("%s: best_mux = %x, best_div = %d, best_rate = %ld\n",
+	      __func__, *best_mux, *best_div, best_rate);
+
+	return best_rate;
+}
+
+static ulong rk3368_mmc_set_clk(struct clk *clk, ulong rate)
+{
+	struct rk3368_clk_priv *priv = dev_get_priv(clk->dev);
+	struct rk3368_cru *cru = priv->cru;
+	ulong clk_id = clk->id;
+	u32 con_id, mux = 0, div = 0;
+
+	/* Find the best parent and rate */
+	rk3368_mmc_find_best_rate_and_parent(clk, rate << 1, &mux, &div);
+
+	switch (clk_id) {
+	case HCLK_SDMMC:
+		con_id = 50;
+		break;
+	case HCLK_EMMC:
+		con_id = 51;
+		break;
+	case SCLK_SDIO0:
+		con_id = 48;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	rk_clrsetreg(&cru->clksel_con[con_id],
+		     MMC_PLL_SEL_MASK | MMC_CLK_DIV_MASK,
+		     mux | div);
+
+	return rk3368_mmc_get_clk(cru, clk_id);
+}
+#endif
+
+#if IS_ENABLED(CONFIG_TPL_BUILD)
+static ulong rk3368_ddr_set_clk(struct rk3368_cru *cru, ulong set_rate)
+{
+	const struct pll_div *dpll_cfg = NULL;
+	const ulong MHz = 1000000;
+
+	/* Fout = ((Fin /NR) * NF )/ NO */
+	static const struct pll_div dpll_1200 = PLL_DIVISORS(1200 * MHz, 1, 1);
+	static const struct pll_div dpll_1332 =	PLL_DIVISORS(1332 * MHz, 2, 1);
+	static const struct pll_div dpll_1600 =	PLL_DIVISORS(1600 * MHz, 3, 2);
+
+	switch (set_rate) {
+	case 1200*MHz:
+		dpll_cfg = &dpll_1200;
+		break;
+	case 1332*MHz:
+		dpll_cfg = &dpll_1332;
+		break;
+	case 1600*MHz:
+		dpll_cfg = &dpll_1600;
+		break;
+	default:
+		pr_err("Unsupported SDRAM frequency!,%ld\n", set_rate);
+	}
+	rkclk_set_pll(cru, DPLL, dpll_cfg);
+
+	return set_rate;
+}
+#endif
+
+#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
+static ulong rk3368_gmac_set_clk(struct rk3368_cru *cru, ulong set_rate)
+{
+	ulong ret;
+
+	/*
+	 * The gmac clock can be derived either from an external clock
+	 * or can be generated from internally by a divider from SCLK_MAC.
+	 */
+	if (readl(&cru->clksel_con[43]) & GMAC_MUX_SEL_EXTCLK) {
+		/* An external clock will always generate the right rate... */
+		ret = set_rate;
+	} else {
+		u32 con = readl(&cru->clksel_con[43]);
+		ulong pll_rate;
+		u8 div;
+
+		if (((con >> GMAC_PLL_SHIFT) & GMAC_PLL_MASK) ==
+		    GMAC_PLL_SELECT_GENERAL)
+			pll_rate = GPLL_HZ;
+		else if (((con >> GMAC_PLL_SHIFT) & GMAC_PLL_MASK) ==
+			 GMAC_PLL_SELECT_CODEC)
+			pll_rate = CPLL_HZ;
+		else
+			/* CPLL is not set */
+			return -EPERM;
+
+		div = DIV_ROUND_UP(pll_rate, set_rate) - 1;
+		if (div <= 0x1f)
+			rk_clrsetreg(&cru->clksel_con[43], GMAC_DIV_CON_MASK,
+				     div << GMAC_DIV_CON_SHIFT);
+		else
+			debug("Unsupported div for gmac:%d\n", div);
+
+		return DIV_TO_RATE(pll_rate, div);
+	}
+
+	return ret;
+}
+#endif
+
+/*
+ * RK3368 SPI clocks have a common divider-width (7 bits) and a single bit
+ * to select either CPLL or GPLL as the clock-parent. The location within
+ * the enclosing CLKSEL_CON (i.e. div_shift and sel_shift) are variable.
+ */
+
+struct spi_clkreg {
+	uint8_t reg;  /* CLKSEL_CON[reg] register in CRU */
+	uint8_t div_shift;
+	uint8_t sel_shift;
+};
+
+/*
+ * The entries are numbered relative to their offset from SCLK_SPI0.
+ */
+static const struct spi_clkreg spi_clkregs[] = {
+	[0] = { .reg = 45, .div_shift = 0, .sel_shift = 7, },
+	[1] = { .reg = 45, .div_shift = 8, .sel_shift = 15, },
+	[2] = { .reg = 46, .div_shift = 8, .sel_shift = 15, },
+};
+
+static inline u32 extract_bits(u32 val, unsigned width, unsigned shift)
+{
+	return (val >> shift) & ((1 << width) - 1);
+}
+
+static ulong rk3368_spi_get_clk(struct rk3368_cru *cru, ulong clk_id)
+{
+	const struct spi_clkreg *spiclk = NULL;
+	u32 div, val;
+
+	switch (clk_id) {
+	case SCLK_SPI0 ... SCLK_SPI2:
+		spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
+		break;
+
+	default:
+		pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
+		return -EINVAL;
+	}
+
+	val = readl(&cru->clksel_con[spiclk->reg]);
+	div = extract_bits(val, 7, spiclk->div_shift);
+
+	debug("%s: div 0x%x\n", __func__, div);
+	return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rk3368_spi_set_clk(struct rk3368_cru *cru, ulong clk_id, uint hz)
+{
+	const struct spi_clkreg *spiclk = NULL;
+	int src_clk_div;
+
+	src_clk_div = DIV_ROUND_UP(GPLL_HZ, hz);
+	assert(src_clk_div < 127);
+
+	switch (clk_id) {
+	case SCLK_SPI0 ... SCLK_SPI2:
+		spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
+		break;
+
+	default:
+		pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
+		return -EINVAL;
+	}
+
+	rk_clrsetreg(&cru->clksel_con[spiclk->reg],
+		     ((0x7f << spiclk->div_shift) |
+		      (0x1 << spiclk->sel_shift)),
+		     ((src_clk_div << spiclk->div_shift) |
+		      (1 << spiclk->sel_shift)));
+
+	return rk3368_spi_get_clk(cru, clk_id);
+}
+
+static ulong rk3368_saradc_get_clk(struct rk3368_cru *cru)
+{
+	u32 div, val;
+
+	val = readl(&cru->clksel_con[25]);
+	div = bitfield_extract(val, CLK_SARADC_DIV_CON_SHIFT,
+			       CLK_SARADC_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(OSC_HZ, div);
+}
+
+static ulong rk3368_saradc_set_clk(struct rk3368_cru *cru, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1;
+	assert(src_clk_div < 128);
+
+	rk_clrsetreg(&cru->clksel_con[25],
+		     CLK_SARADC_DIV_CON_MASK,
+		     src_clk_div << CLK_SARADC_DIV_CON_SHIFT);
+
+	return rk3368_saradc_get_clk(cru);
+}
+
+static ulong rk3368_clk_get_rate(struct clk *clk)
+{
+	struct rk3368_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong rate = 0;
+
+	debug("%s: id %ld\n", __func__, clk->id);
+	switch (clk->id) {
+	case PLL_CPLL:
+		rate = rkclk_pll_get_rate(priv->cru, CPLL);
+		break;
+	case PLL_GPLL:
+		rate = rkclk_pll_get_rate(priv->cru, GPLL);
+		break;
+	case SCLK_SPI0 ... SCLK_SPI2:
+		rate = rk3368_spi_get_clk(priv->cru, clk->id);
+		break;
+#if !IS_ENABLED(CONFIG_SPL_BUILD) || CONFIG_IS_ENABLED(MMC_SUPPORT)
+	case HCLK_SDMMC:
+	case HCLK_EMMC:
+		rate = rk3368_mmc_get_clk(priv->cru, clk->id);
+		break;
+#endif
+	case SCLK_SARADC:
+		rate = rk3368_saradc_get_clk(priv->cru);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return rate;
+}
+
+static ulong rk3368_clk_set_rate(struct clk *clk, ulong rate)
+{
+	__maybe_unused struct rk3368_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong ret = 0;
+
+	debug("%s id:%ld rate:%ld\n", __func__, clk->id, rate);
+	switch (clk->id) {
+	case SCLK_SPI0 ... SCLK_SPI2:
+		ret = rk3368_spi_set_clk(priv->cru, clk->id, rate);
+		break;
+#if IS_ENABLED(CONFIG_TPL_BUILD)
+	case CLK_DDR:
+		ret = rk3368_ddr_set_clk(priv->cru, rate);
+		break;
+#endif
+#if !IS_ENABLED(CONFIG_SPL_BUILD) || CONFIG_IS_ENABLED(MMC_SUPPORT)
+	case HCLK_SDMMC:
+	case HCLK_EMMC:
+		ret = rk3368_mmc_set_clk(clk, rate);
+		break;
+#endif
+#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
+	case SCLK_MAC:
+		/* select the external clock */
+		ret = rk3368_gmac_set_clk(priv->cru, rate);
+		break;
+#endif
+	case SCLK_SARADC:
+		ret =  rk3368_saradc_set_clk(priv->cru, rate);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return ret;
+}
+
+static int __maybe_unused rk3368_gmac_set_parent(struct clk *clk, struct clk *parent)
+{
+	struct rk3368_clk_priv *priv = dev_get_priv(clk->dev);
+	struct rk3368_cru *cru = priv->cru;
+	const char *clock_output_name;
+	int ret;
+
+	/*
+	 * If the requested parent is in the same clock-controller and
+	 * the id is SCLK_MAC ("sclk_mac"), switch to the internal
+	 * clock.
+	 */
+	if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC)) {
+		debug("%s: switching GAMC to SCLK_MAC\n", __func__);
+		rk_clrreg(&cru->clksel_con[43], GMAC_MUX_SEL_EXTCLK);
+		return 0;
+	}
+
+	/*
+	 * Otherwise, we need to check the clock-output-names of the
+	 * requested parent to see if the requested id is "ext_gmac".
+	 */
+	ret = dev_read_string_index(parent->dev, "clock-output-names",
+				    parent->id, &clock_output_name);
+	if (ret < 0)
+		return -ENODATA;
+
+	/* If this is "ext_gmac", switch to the external clock input */
+	if (!strcmp(clock_output_name, "ext_gmac")) {
+		debug("%s: switching GMAC to external clock\n", __func__);
+		rk_setreg(&cru->clksel_con[43], GMAC_MUX_SEL_EXTCLK);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int __maybe_unused rk3368_clk_set_parent(struct clk *clk, struct clk *parent)
+{
+	switch (clk->id) {
+	case SCLK_MAC:
+		return rk3368_gmac_set_parent(clk, parent);
+	}
+
+	debug("%s: unsupported clk %ld\n", __func__, clk->id);
+	return -ENOENT;
+}
+
+static struct clk_ops rk3368_clk_ops = {
+	.get_rate = rk3368_clk_get_rate,
+	.set_rate = rk3368_clk_set_rate,
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
+	.set_parent = rk3368_clk_set_parent,
+#endif
+};
+
+static int rk3368_clk_probe(struct udevice *dev)
+{
+	struct rk3368_clk_priv __maybe_unused *priv = dev_get_priv(dev);
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct rk3368_clk_plat *plat = dev_get_platdata(dev);
+
+	priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
+#endif
+#if IS_ENABLED(CONFIG_SPL_BUILD) || IS_ENABLED(CONFIG_TPL_BUILD)
+	rkclk_init(priv->cru);
+#endif
+
+	return 0;
+}
+
+static int rk3368_clk_ofdata_to_platdata(struct udevice *dev)
+{
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct rk3368_clk_priv *priv = dev_get_priv(dev);
+
+	priv->cru = dev_read_addr_ptr(dev);
+#endif
+
+	return 0;
+}
+
+static int rk3368_clk_bind(struct udevice *dev)
+{
+	int ret;
+	struct udevice *sys_child;
+	struct sysreset_reg *priv;
+
+	/* The reset driver does not have a device node, so bind it here */
+	ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
+				 &sys_child);
+	if (ret) {
+		debug("Warning: No sysreset driver: ret=%d\n", ret);
+	} else {
+		priv = malloc(sizeof(struct sysreset_reg));
+		priv->glb_srst_fst_value = offsetof(struct rk3368_cru,
+						    glb_srst_fst_val);
+		priv->glb_srst_snd_value = offsetof(struct rk3368_cru,
+						    glb_srst_snd_val);
+		sys_child->priv = priv;
+	}
+
+#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
+	ret = offsetof(struct rk3368_cru, softrst_con[0]);
+	ret = rockchip_reset_bind(dev, ret, 15);
+	if (ret)
+		debug("Warning: software reset driver bind faile\n");
+#endif
+
+	return ret;
+}
+
+static const struct udevice_id rk3368_clk_ids[] = {
+	{ .compatible = "rockchip,rk3368-cru" },
+	{ }
+};
+
+U_BOOT_DRIVER(rockchip_rk3368_cru) = {
+	.name		= "rockchip_rk3368_cru",
+	.id		= UCLASS_CLK,
+	.of_match	= rk3368_clk_ids,
+	.priv_auto_alloc_size = sizeof(struct rk3368_clk_priv),
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	.platdata_auto_alloc_size = sizeof(struct rk3368_clk_plat),
+#endif
+	.ofdata_to_platdata = rk3368_clk_ofdata_to_platdata,
+	.ops		= &rk3368_clk_ops,
+	.bind		= rk3368_clk_bind,
+	.probe		= rk3368_clk_probe,
+};

source/bootloader/u-boot-2020.01/drivers/clk/rockchip/clk_rv1108.c

@@ -0,0 +1,723 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ * Author: Andy Yan <andy.yan@rock-chips.com>
+ */
+
+#include <common.h>
+#include <bitfield.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rv1108.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <dm/lists.h>
+#include <dt-bindings/clock/rv1108-cru.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+enum {
+	VCO_MAX_HZ	= 2400U * 1000000,
+	VCO_MIN_HZ	= 600 * 1000000,
+	OUTPUT_MAX_HZ	= 2400U * 1000000,
+	OUTPUT_MIN_HZ	= 24 * 1000000,
+};
+
+#define DIV_TO_RATE(input_rate, div)	((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
+	.refdiv = _refdiv,\
+	.fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
+	.postdiv1 = _postdiv1, .postdiv2 = _postdiv2};\
+	_Static_assert(((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ) *\
+			 OSC_HZ / (_refdiv * _postdiv1 * _postdiv2) == hz,\
+			 #hz "Hz cannot be hit with PLL "\
+			 "divisors on line " __stringify(__LINE__));
+
+static const struct pll_div apll_init_cfg = PLL_DIVISORS(APLL_HZ, 1, 3, 1);
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
+
+/* use integer mode */
+static inline int rv1108_pll_id(enum rk_clk_id clk_id)
+{
+	int id = 0;
+
+	switch (clk_id) {
+	case CLK_ARM:
+	case CLK_DDR:
+		id = clk_id - 1;
+		break;
+	case CLK_GENERAL:
+		id = 2;
+		break;
+	default:
+		printf("invalid pll id:%d\n", clk_id);
+		id = -1;
+		break;
+	}
+
+	return id;
+}
+
+static int rkclk_set_pll(struct rv1108_cru *cru, enum rk_clk_id clk_id,
+			 const struct pll_div *div)
+{
+	int pll_id = rv1108_pll_id(clk_id);
+	struct rv1108_pll *pll = &cru->pll[pll_id];
+
+	/* All PLLs have same VCO and output frequency range restrictions. */
+	uint vco_hz = OSC_HZ / 1000 * div->fbdiv / div->refdiv * 1000;
+	uint output_hz = vco_hz / div->postdiv1 / div->postdiv2;
+
+	debug("PLL at %p: fb=%d, ref=%d, pst1=%d, pst2=%d, vco=%u Hz, output=%u Hz\n",
+	      pll, div->fbdiv, div->refdiv, div->postdiv1,
+	      div->postdiv2, vco_hz, output_hz);
+	assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
+	       output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ);
+
+	/*
+	 * When power on or changing PLL setting,
+	 * we must force PLL into slow mode to ensure output stable clock.
+	 */
+	rk_clrsetreg(&pll->con3, WORK_MODE_MASK,
+		     WORK_MODE_SLOW << WORK_MODE_SHIFT);
+
+	/* use integer mode */
+	rk_setreg(&pll->con3, 1 << DSMPD_SHIFT);
+	/* Power down */
+	rk_setreg(&pll->con3, 1 << GLOBAL_POWER_DOWN_SHIFT);
+
+	rk_clrsetreg(&pll->con0, FBDIV_MASK, div->fbdiv << FBDIV_SHIFT);
+	rk_clrsetreg(&pll->con1, POSTDIV1_MASK | POSTDIV2_MASK | REFDIV_MASK,
+		     (div->postdiv1 << POSTDIV1_SHIFT |
+		     div->postdiv2 << POSTDIV2_SHIFT |
+		     div->refdiv << REFDIV_SHIFT));
+	rk_clrsetreg(&pll->con2, FRACDIV_MASK,
+		     (div->refdiv << REFDIV_SHIFT));
+
+	/* Power Up */
+	rk_clrreg(&pll->con3, 1 << GLOBAL_POWER_DOWN_SHIFT);
+
+	/* waiting for pll lock */
+	while (readl(&pll->con2) & (1 << LOCK_STA_SHIFT))
+		udelay(1);
+
+	/*
+	 * set PLL into normal mode.
+	 */
+	rk_clrsetreg(&pll->con3, WORK_MODE_MASK,
+		     WORK_MODE_NORMAL << WORK_MODE_SHIFT);
+
+	return 0;
+}
+
+static uint32_t rkclk_pll_get_rate(struct rv1108_cru *cru,
+				   enum rk_clk_id clk_id)
+{
+	uint32_t refdiv, fbdiv, postdiv1, postdiv2;
+	uint32_t con0, con1, con3;
+	int pll_id = rv1108_pll_id(clk_id);
+	struct rv1108_pll *pll = &cru->pll[pll_id];
+	uint32_t freq;
+
+	con3 = readl(&pll->con3);
+
+	if (con3 & WORK_MODE_MASK) {
+		con0 = readl(&pll->con0);
+		con1 = readl(&pll->con1);
+		fbdiv = (con0 >> FBDIV_SHIFT) & FBDIV_MASK;
+		postdiv1 = (con1 & POSTDIV1_MASK) >> POSTDIV1_SHIFT;
+		postdiv2 = (con1 & POSTDIV2_MASK) >> POSTDIV2_SHIFT;
+		refdiv = (con1 >> REFDIV_SHIFT) & REFDIV_MASK;
+		freq = (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
+	} else {
+		freq = OSC_HZ;
+	}
+
+	return freq;
+}
+
+static int rv1108_mac_set_clk(struct rv1108_cru *cru, ulong rate)
+{
+	uint32_t con = readl(&cru->clksel_con[24]);
+	ulong pll_rate;
+	uint8_t div;
+
+	if ((con >> MAC_PLL_SEL_SHIFT) & MAC_PLL_SEL_GPLL)
+		pll_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+	else
+		pll_rate = rkclk_pll_get_rate(cru, CLK_ARM);
+
+	/*default set 50MHZ for gmac*/
+	if (!rate)
+		rate = 50000000;
+
+	div = DIV_ROUND_UP(pll_rate, rate) - 1;
+	if (div <= 0x1f)
+		rk_clrsetreg(&cru->clksel_con[24], MAC_CLK_DIV_MASK,
+			     div << MAC_CLK_DIV_SHIFT);
+	else
+		debug("Unsupported div for gmac:%d\n", div);
+
+	return DIV_TO_RATE(pll_rate, div);
+}
+
+static int rv1108_sfc_set_clk(struct rv1108_cru *cru, uint rate)
+{
+	u32 con = readl(&cru->clksel_con[27]);
+	u32 pll_rate;
+	u32 div;
+
+	if ((con >> SFC_PLL_SEL_SHIFT) && SFC_PLL_SEL_GPLL)
+		pll_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+	else
+		pll_rate = rkclk_pll_get_rate(cru, CLK_DDR);
+
+	div = DIV_ROUND_UP(pll_rate, rate) - 1;
+	if (div <= 0x3f)
+		rk_clrsetreg(&cru->clksel_con[27], SFC_CLK_DIV_MASK,
+			     div << SFC_CLK_DIV_SHIFT);
+	else
+		debug("Unsupported sfc clk rate:%d\n", rate);
+
+	return DIV_TO_RATE(pll_rate, div);
+}
+
+static ulong rv1108_saradc_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, val;
+
+	val = readl(&cru->clksel_con[22]);
+	div = bitfield_extract(val, CLK_SARADC_DIV_CON_SHIFT,
+			       CLK_SARADC_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(OSC_HZ, div);
+}
+
+static ulong rv1108_saradc_set_clk(struct rv1108_cru *cru, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1;
+	assert(src_clk_div < 128);
+
+	rk_clrsetreg(&cru->clksel_con[22],
+		     CLK_SARADC_DIV_CON_MASK,
+		     src_clk_div << CLK_SARADC_DIV_CON_SHIFT);
+
+	return rv1108_saradc_get_clk(cru);
+}
+
+static ulong rv1108_aclk_vio1_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, val;
+
+	val = readl(&cru->clksel_con[28]);
+	div = bitfield_extract(val, ACLK_VIO1_CLK_DIV_SHIFT,
+			       CLK_VIO_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rv1108_aclk_vio1_set_clk(struct rv1108_cru *cru, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = DIV_ROUND_UP(GPLL_HZ, hz) - 1;
+	assert(src_clk_div < 32);
+
+	rk_clrsetreg(&cru->clksel_con[28],
+		     ACLK_VIO1_CLK_DIV_MASK | ACLK_VIO1_PLL_SEL_MASK,
+		     (src_clk_div << ACLK_VIO1_CLK_DIV_SHIFT) |
+		     (VIO_PLL_SEL_GPLL << ACLK_VIO1_PLL_SEL_SHIFT));
+
+	return rv1108_aclk_vio1_get_clk(cru);
+}
+
+static ulong rv1108_aclk_vio0_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, val;
+
+	val = readl(&cru->clksel_con[28]);
+	div = bitfield_extract(val, ACLK_VIO0_CLK_DIV_SHIFT,
+			       CLK_VIO_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rv1108_aclk_vio0_set_clk(struct rv1108_cru *cru, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = DIV_ROUND_UP(GPLL_HZ, hz) - 1;
+	assert(src_clk_div < 32);
+
+	rk_clrsetreg(&cru->clksel_con[28],
+		     ACLK_VIO0_CLK_DIV_MASK | ACLK_VIO0_PLL_SEL_MASK,
+		     (src_clk_div << ACLK_VIO0_CLK_DIV_SHIFT) |
+		     (VIO_PLL_SEL_GPLL << ACLK_VIO0_PLL_SEL_SHIFT));
+
+	/*HCLK_VIO default div = 4*/
+	rk_clrsetreg(&cru->clksel_con[29],
+		     HCLK_VIO_CLK_DIV_MASK,
+		     3 << HCLK_VIO_CLK_DIV_SHIFT);
+	/*PCLK_VIO default div = 4*/
+	rk_clrsetreg(&cru->clksel_con[29],
+		     PCLK_VIO_CLK_DIV_MASK,
+		     3 << PCLK_VIO_CLK_DIV_SHIFT);
+
+	return rv1108_aclk_vio0_get_clk(cru);
+}
+
+static ulong rv1108_dclk_vop_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, val;
+
+	val = readl(&cru->clksel_con[32]);
+	div = bitfield_extract(val, DCLK_VOP_CLK_DIV_SHIFT,
+			       DCLK_VOP_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rv1108_dclk_vop_set_clk(struct rv1108_cru *cru, uint hz)
+{
+	int src_clk_div;
+
+	src_clk_div = DIV_ROUND_UP(GPLL_HZ, hz) - 1;
+	assert(src_clk_div < 64);
+
+	rk_clrsetreg(&cru->clksel_con[32],
+		     DCLK_VOP_CLK_DIV_MASK | DCLK_VOP_PLL_SEL_MASK |
+		     DCLK_VOP_SEL_SHIFT,
+		     (src_clk_div << DCLK_VOP_CLK_DIV_SHIFT) |
+		     (DCLK_VOP_PLL_SEL_GPLL << DCLK_VOP_PLL_SEL_SHIFT) |
+		     (DCLK_VOP_SEL_PLL << DCLK_VOP_SEL_SHIFT));
+
+	return rv1108_dclk_vop_get_clk(cru);
+}
+
+static ulong rv1108_aclk_bus_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, val;
+	ulong parent_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	val = readl(&cru->clksel_con[2]);
+	div = bitfield_extract(val, ACLK_BUS_DIV_CON_SHIFT,
+			       ACLK_BUS_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(parent_rate, div);
+}
+
+static ulong rv1108_aclk_bus_set_clk(struct rv1108_cru *cru, uint hz)
+{
+	int src_clk_div;
+	ulong parent_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	src_clk_div = DIV_ROUND_UP(parent_rate, hz) - 1;
+	assert(src_clk_div < 32);
+
+	rk_clrsetreg(&cru->clksel_con[2],
+		     ACLK_BUS_DIV_CON_MASK | ACLK_BUS_PLL_SEL_MASK,
+		     (src_clk_div << ACLK_BUS_DIV_CON_SHIFT) |
+		     (ACLK_BUS_PLL_SEL_GPLL << ACLK_BUS_PLL_SEL_SHIFT));
+
+	return rv1108_aclk_bus_get_clk(cru);
+}
+
+static ulong rv1108_aclk_peri_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, val;
+	ulong parent_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	val = readl(&cru->clksel_con[23]);
+	div = bitfield_extract(val, ACLK_PERI_DIV_CON_SHIFT,
+			       PERI_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(parent_rate, div);
+}
+
+static ulong rv1108_hclk_peri_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, val;
+	ulong parent_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	val = readl(&cru->clksel_con[23]);
+	div = bitfield_extract(val, HCLK_PERI_DIV_CON_SHIFT,
+			       PERI_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(parent_rate, div);
+}
+
+static ulong rv1108_pclk_peri_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, val;
+	ulong parent_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	val = readl(&cru->clksel_con[23]);
+	div = bitfield_extract(val, PCLK_PERI_DIV_CON_SHIFT,
+			       PERI_DIV_CON_WIDTH);
+
+	return DIV_TO_RATE(parent_rate, div);
+}
+
+static ulong rv1108_aclk_peri_set_clk(struct rv1108_cru *cru, uint hz)
+{
+	int src_clk_div;
+	ulong parent_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	src_clk_div = DIV_ROUND_UP(parent_rate, hz) - 1;
+	assert(src_clk_div < 32);
+
+	rk_clrsetreg(&cru->clksel_con[23],
+		     ACLK_PERI_DIV_CON_MASK | ACLK_PERI_PLL_SEL_MASK,
+		     (src_clk_div << ACLK_PERI_DIV_CON_SHIFT) |
+		     (ACLK_PERI_PLL_SEL_GPLL << ACLK_PERI_PLL_SEL_SHIFT));
+
+	return rv1108_aclk_peri_get_clk(cru);
+}
+
+static ulong rv1108_hclk_peri_set_clk(struct rv1108_cru *cru, uint hz)
+{
+	int src_clk_div;
+	ulong parent_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	src_clk_div = DIV_ROUND_UP(parent_rate, hz) - 1;
+	assert(src_clk_div < 32);
+
+	rk_clrsetreg(&cru->clksel_con[23],
+		     HCLK_PERI_DIV_CON_MASK,
+		     (src_clk_div << HCLK_PERI_DIV_CON_SHIFT));
+
+	return rv1108_hclk_peri_get_clk(cru);
+}
+
+static ulong rv1108_pclk_peri_set_clk(struct rv1108_cru *cru, uint hz)
+{
+	int src_clk_div;
+	ulong parent_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	src_clk_div = DIV_ROUND_UP(parent_rate, hz) - 1;
+	assert(src_clk_div < 32);
+
+	rk_clrsetreg(&cru->clksel_con[23],
+		     PCLK_PERI_DIV_CON_MASK,
+		     (src_clk_div << PCLK_PERI_DIV_CON_SHIFT));
+
+	return rv1108_pclk_peri_get_clk(cru);
+}
+
+static ulong rv1108_i2c_get_clk(struct rv1108_cru *cru, ulong clk_id)
+{
+	u32 div, con;
+
+	switch (clk_id) {
+	case SCLK_I2C0_PMU:
+		con = readl(&cru->clksel_con[19]);
+		div = bitfield_extract(con, CLK_I2C0_DIV_CON_SHIFT,
+				       I2C_DIV_CON_WIDTH);
+		break;
+	case SCLK_I2C1:
+		con = readl(&cru->clksel_con[19]);
+		div = bitfield_extract(con, CLK_I2C1_DIV_CON_SHIFT,
+				       I2C_DIV_CON_WIDTH);
+		break;
+	case SCLK_I2C2:
+		con = readl(&cru->clksel_con[20]);
+		div = bitfield_extract(con, CLK_I2C2_DIV_CON_SHIFT,
+				       I2C_DIV_CON_WIDTH);
+		break;
+	case SCLK_I2C3:
+		con = readl(&cru->clksel_con[20]);
+		div = bitfield_extract(con, CLK_I2C3_DIV_CON_SHIFT,
+				       I2C_DIV_CON_WIDTH);
+		break;
+	default:
+		printf("do not support this i2c bus\n");
+		return -EINVAL;
+	}
+
+	return DIV_TO_RATE(GPLL_HZ, div);
+}
+
+static ulong rv1108_i2c_set_clk(struct rv1108_cru *cru, ulong clk_id, uint hz)
+{
+	int src_clk_div;
+
+	/* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/
+	src_clk_div = GPLL_HZ / hz;
+	assert(src_clk_div - 1 <= 127);
+
+	switch (clk_id) {
+	case SCLK_I2C0_PMU:
+		rk_clrsetreg(&cru->clksel_con[19],
+			     CLK_I2C0_DIV_CON_MASK | CLK_I2C1_PLL_SEL_MASK,
+			     (src_clk_div << CLK_I2C0_DIV_CON_SHIFT) |
+			     (CLK_I2C1_PLL_SEL_GPLL << CLK_I2C1_PLL_SEL_SHIFT));
+		break;
+	case SCLK_I2C1:
+		rk_clrsetreg(&cru->clksel_con[19],
+			     CLK_I2C1_DIV_CON_MASK | CLK_I2C1_PLL_SEL_MASK,
+			     (src_clk_div << CLK_I2C1_DIV_CON_SHIFT) |
+			     (CLK_I2C1_PLL_SEL_GPLL << CLK_I2C1_PLL_SEL_SHIFT));
+		break;
+	case SCLK_I2C2:
+		rk_clrsetreg(&cru->clksel_con[20],
+			     CLK_I2C2_DIV_CON_MASK | CLK_I2C3_PLL_SEL_MASK,
+			     (src_clk_div << CLK_I2C2_DIV_CON_SHIFT) |
+			     (CLK_I2C3_PLL_SEL_GPLL << CLK_I2C3_PLL_SEL_SHIFT));
+		break;
+	case SCLK_I2C3:
+		rk_clrsetreg(&cru->clksel_con[20],
+			     CLK_I2C3_DIV_CON_MASK | CLK_I2C3_PLL_SEL_MASK,
+			     (src_clk_div << CLK_I2C3_DIV_CON_SHIFT) |
+			     (CLK_I2C3_PLL_SEL_GPLL << CLK_I2C3_PLL_SEL_SHIFT));
+		break;
+	default:
+		printf("do not support this i2c bus\n");
+		return -EINVAL;
+	}
+
+	return rv1108_i2c_get_clk(cru, clk_id);
+}
+
+static ulong rv1108_mmc_get_clk(struct rv1108_cru *cru)
+{
+	u32 div, con;
+	ulong mmc_clk;
+
+	con = readl(&cru->clksel_con[26]);
+	div = bitfield_extract(con, EMMC_CLK_DIV_SHIFT, 8);
+
+	con = readl(&cru->clksel_con[25]);
+
+	if ((con & EMMC_PLL_SEL_MASK) >> EMMC_PLL_SEL_SHIFT == EMMC_PLL_SEL_OSC)
+		mmc_clk = DIV_TO_RATE(OSC_HZ, div) / 2;
+	else
+		mmc_clk = DIV_TO_RATE(GPLL_HZ, div) / 2;
+
+	debug("%s div %d get_clk %ld\n", __func__, div, mmc_clk);
+	return mmc_clk;
+}
+
+static ulong rv1108_mmc_set_clk(struct rv1108_cru *cru, ulong rate)
+{
+	int div;
+	u32 pll_rate;
+
+	div = DIV_ROUND_UP(rkclk_pll_get_rate(cru, CLK_GENERAL), rate);
+
+	if (div < 127) {
+		debug("%s source gpll\n", __func__);
+		rk_clrsetreg(&cru->clksel_con[25], EMMC_PLL_SEL_MASK,
+			    (EMMC_PLL_SEL_GPLL << EMMC_PLL_SEL_SHIFT));
+		pll_rate = rkclk_pll_get_rate(cru, CLK_GENERAL);
+	} else {
+		debug("%s source 24m\n", __func__);
+		rk_clrsetreg(&cru->clksel_con[25], EMMC_PLL_SEL_MASK,
+			    (EMMC_PLL_SEL_OSC << EMMC_PLL_SEL_SHIFT));
+		pll_rate = OSC_HZ;
+	}
+
+	div = DIV_ROUND_UP(pll_rate / 2, rate);
+	rk_clrsetreg(&cru->clksel_con[26], EMMC_CLK_DIV_MASK,
+		    ((div - 1) << EMMC_CLK_DIV_SHIFT));
+
+	debug("%s set_rate %ld div %d\n", __func__,  rate, div);
+
+	return DIV_TO_RATE(pll_rate, div);
+}
+
+static ulong rv1108_clk_get_rate(struct clk *clk)
+{
+	struct rv1108_clk_priv *priv = dev_get_priv(clk->dev);
+
+	switch (clk->id) {
+	case 0 ... 63:
+		return rkclk_pll_get_rate(priv->cru, clk->id);
+	case SCLK_SARADC:
+		return rv1108_saradc_get_clk(priv->cru);
+	case ACLK_VIO0:
+		return rv1108_aclk_vio0_get_clk(priv->cru);
+	case ACLK_VIO1:
+		return rv1108_aclk_vio1_get_clk(priv->cru);
+	case DCLK_VOP:
+		return rv1108_dclk_vop_get_clk(priv->cru);
+	case ACLK_PRE:
+		return rv1108_aclk_bus_get_clk(priv->cru);
+	case ACLK_PERI:
+		return rv1108_aclk_peri_get_clk(priv->cru);
+	case HCLK_PERI:
+		return rv1108_hclk_peri_get_clk(priv->cru);
+	case PCLK_PERI:
+		return rv1108_pclk_peri_get_clk(priv->cru);
+	case SCLK_I2C0_PMU:
+	case SCLK_I2C1:
+	case SCLK_I2C2:
+	case SCLK_I2C3:
+		return rv1108_i2c_get_clk(priv->cru, clk->id);
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+	case SCLK_EMMC_SAMPLE:
+		return rv1108_mmc_get_clk(priv->cru);
+	default:
+		return -ENOENT;
+	}
+}
+
+static ulong rv1108_clk_set_rate(struct clk *clk, ulong rate)
+{
+	struct rv1108_clk_priv *priv = dev_get_priv(clk->dev);
+	ulong new_rate;
+
+	switch (clk->id) {
+	case SCLK_MAC:
+		new_rate = rv1108_mac_set_clk(priv->cru, rate);
+		break;
+	case SCLK_SFC:
+		new_rate = rv1108_sfc_set_clk(priv->cru, rate);
+		break;
+	case SCLK_SARADC:
+		new_rate = rv1108_saradc_set_clk(priv->cru, rate);
+		break;
+	case ACLK_VIO0:
+		new_rate = rv1108_aclk_vio0_set_clk(priv->cru, rate);
+		break;
+	case ACLK_VIO1:
+		new_rate = rv1108_aclk_vio1_set_clk(priv->cru, rate);
+		break;
+	case DCLK_VOP:
+		new_rate = rv1108_dclk_vop_set_clk(priv->cru, rate);
+		break;
+	case ACLK_PRE:
+		new_rate = rv1108_aclk_bus_set_clk(priv->cru, rate);
+		break;
+	case ACLK_PERI:
+		new_rate = rv1108_aclk_peri_set_clk(priv->cru, rate);
+		break;
+	case HCLK_PERI:
+		new_rate = rv1108_hclk_peri_set_clk(priv->cru, rate);
+		break;
+	case PCLK_PERI:
+		new_rate = rv1108_pclk_peri_set_clk(priv->cru, rate);
+		break;
+	case SCLK_I2C0_PMU:
+	case SCLK_I2C1:
+	case SCLK_I2C2:
+	case SCLK_I2C3:
+		new_rate = rv1108_i2c_set_clk(priv->cru, clk->id, rate);
+		break;
+	case HCLK_EMMC:
+	case SCLK_EMMC:
+		new_rate = rv1108_mmc_set_clk(priv->cru, rate);
+		break;
+	default:
+		return -ENOENT;
+	}
+
+	return new_rate;
+}
+
+static const struct clk_ops rv1108_clk_ops = {
+	.get_rate	= rv1108_clk_get_rate,
+	.set_rate	= rv1108_clk_set_rate,
+};
+
+static void rkclk_init(struct rv1108_cru *cru)
+{
+	unsigned int apll, dpll, gpll;
+	unsigned int aclk_bus, aclk_peri, hclk_peri, pclk_peri;
+
+	aclk_bus = rv1108_aclk_bus_set_clk(cru, ACLK_BUS_HZ / 2);
+	aclk_peri = rv1108_aclk_peri_set_clk(cru, ACLK_PERI_HZ / 2);
+	hclk_peri = rv1108_hclk_peri_set_clk(cru, HCLK_PERI_HZ / 2);
+	pclk_peri = rv1108_pclk_peri_set_clk(cru, PCLK_PERI_HZ / 2);
+	rv1108_aclk_vio0_set_clk(cru, 297000000);
+	rv1108_aclk_vio1_set_clk(cru, 297000000);
+
+	/* configure apll */
+	rkclk_set_pll(cru, CLK_ARM, &apll_init_cfg);
+	rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
+	aclk_bus = rv1108_aclk_bus_set_clk(cru, ACLK_BUS_HZ);
+	aclk_peri = rv1108_aclk_peri_set_clk(cru, ACLK_PERI_HZ);
+	hclk_peri = rv1108_hclk_peri_set_clk(cru, HCLK_PERI_HZ);
+	pclk_peri = rv1108_pclk_peri_set_clk(cru, PCLK_PERI_HZ);
+
+	apll = rkclk_pll_get_rate(cru, CLK_ARM);
+	dpll = rkclk_pll_get_rate(cru, CLK_DDR);
+	gpll = rkclk_pll_get_rate(cru, CLK_GENERAL);
+
+	rk_clrsetreg(&cru->clksel_con[0], CORE_CLK_DIV_MASK,
+		     0 << MAC_CLK_DIV_SHIFT);
+
+	printf("APLL: %d DPLL:%d GPLL:%d\n", apll, dpll, gpll);
+	printf("ACLK_BUS: %d ACLK_PERI:%d HCLK_PERI:%d PCLK_PERI:%d\n",
+	       aclk_bus, aclk_peri, hclk_peri, pclk_peri);
+}
+
+static int rv1108_clk_ofdata_to_platdata(struct udevice *dev)
+{
+	struct rv1108_clk_priv *priv = dev_get_priv(dev);
+
+	priv->cru = dev_read_addr_ptr(dev);
+
+	return 0;
+}
+
+static int rv1108_clk_probe(struct udevice *dev)
+{
+	struct rv1108_clk_priv *priv = dev_get_priv(dev);
+
+	rkclk_init(priv->cru);
+
+	return 0;
+}
+
+static int rv1108_clk_bind(struct udevice *dev)
+{
+	int ret;
+	struct udevice *sys_child;
+	struct sysreset_reg *priv;
+
+	/* The reset driver does not have a device node, so bind it here */
+	ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
+				 &sys_child);
+	if (ret) {
+		debug("Warning: No sysreset driver: ret=%d\n", ret);
+	} else {
+		priv = malloc(sizeof(struct sysreset_reg));
+		priv->glb_srst_fst_value = offsetof(struct rv1108_cru,
+						    glb_srst_fst_val);
+		priv->glb_srst_snd_value = offsetof(struct rv1108_cru,
+						    glb_srst_snd_val);
+		sys_child->priv = priv;
+	}
+
+#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
+	ret = offsetof(struct rv1108_cru, softrst_con[0]);
+	ret = rockchip_reset_bind(dev, ret, 13);
+	if (ret)
+		debug("Warning: software reset driver bind faile\n");
+#endif
+
+	return 0;
+}
+
+static const struct udevice_id rv1108_clk_ids[] = {
+	{ .compatible = "rockchip,rv1108-cru" },
+	{ }
+};
+
+U_BOOT_DRIVER(clk_rv1108) = {
+	.name		= "clk_rv1108",
+	.id		= UCLASS_CLK,
+	.of_match	= rv1108_clk_ids,
+	.priv_auto_alloc_size = sizeof(struct rv1108_clk_priv),
+	.ops		= &rv1108_clk_ops,
+	.bind		= rv1108_clk_bind,
+	.ofdata_to_platdata	= rv1108_clk_ofdata_to_platdata,
+	.probe		= rv1108_clk_probe,
+};