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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2016 Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * Rockchip SD Host Controller Interface
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dt-structs.h>
+#include <linux/libfdt.h>
+#include <malloc.h>
+#include <mapmem.h>
+#include <sdhci.h>
+#include <clk.h>
+
+/* 400KHz is max freq for card ID etc. Use that as min */
+#define EMMC_MIN_FREQ	400000
+
+struct rockchip_sdhc_plat {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct dtd_rockchip_rk3399_sdhci_5_1 dtplat;
+#endif
+	struct mmc_config cfg;
+	struct mmc mmc;
+};
+
+struct rockchip_sdhc {
+	struct sdhci_host host;
+	void *base;
+};
+
+static int arasan_sdhci_probe(struct udevice *dev)
+{
+	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+	struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
+	struct rockchip_sdhc *prv = dev_get_priv(dev);
+	struct sdhci_host *host = &prv->host;
+	int max_frequency, ret;
+	struct clk clk;
+
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct dtd_rockchip_rk3399_sdhci_5_1 *dtplat = &plat->dtplat;
+
+	host->name = dev->name;
+	host->ioaddr = map_sysmem(dtplat->reg[0], dtplat->reg[1]);
+	max_frequency = dtplat->max_frequency;
+	ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &clk);
+#else
+	max_frequency = dev_read_u32_default(dev, "max-frequency", 0);
+	ret = clk_get_by_index(dev, 0, &clk);
+#endif
+	if (!ret) {
+		ret = clk_set_rate(&clk, max_frequency);
+		if (IS_ERR_VALUE(ret))
+			printf("%s clk set rate fail!\n", __func__);
+	} else {
+		printf("%s fail to get clk\n", __func__);
+	}
+
+	host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD;
+	host->max_clk = max_frequency;
+	/*
+	 * The sdhci-driver only supports 4bit and 8bit, as sdhci_setup_cfg
+	 * doesn't allow us to clear MMC_MODE_4BIT.  Consequently, we don't
+	 * check for other bus-width values.
+	 */
+	if (host->bus_width == 8)
+		host->host_caps |= MMC_MODE_8BIT;
+
+	host->mmc = &plat->mmc;
+	host->mmc->priv = &prv->host;
+	host->mmc->dev = dev;
+	upriv->mmc = host->mmc;
+
+	ret = sdhci_setup_cfg(&plat->cfg, host, 0, EMMC_MIN_FREQ);
+	if (ret)
+		return ret;
+
+	return sdhci_probe(dev);
+}
+
+static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
+{
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+	struct sdhci_host *host = dev_get_priv(dev);
+
+	host->name = dev->name;
+	host->ioaddr = dev_read_addr_ptr(dev);
+	host->bus_width = dev_read_u32_default(dev, "bus-width", 4);
+#endif
+
+	return 0;
+}
+
+static int rockchip_sdhci_bind(struct udevice *dev)
+{
+	struct rockchip_sdhc_plat *plat = dev_get_platdata(dev);
+
+	return sdhci_bind(dev, &plat->mmc, &plat->cfg);
+}
+
+static const struct udevice_id arasan_sdhci_ids[] = {
+	{ .compatible = "arasan,sdhci-5.1" },
+	{ }
+};
+
+U_BOOT_DRIVER(arasan_sdhci_drv) = {
+	.name		= "rockchip_rk3399_sdhci_5_1",
+	.id		= UCLASS_MMC,
+	.of_match	= arasan_sdhci_ids,
+	.ofdata_to_platdata = arasan_sdhci_ofdata_to_platdata,
+	.ops		= &sdhci_ops,
+	.bind		= rockchip_sdhci_bind,
+	.probe		= arasan_sdhci_probe,
+	.priv_auto_alloc_size = sizeof(struct rockchip_sdhc),
+	.platdata_auto_alloc_size = sizeof(struct rockchip_sdhc_plat),
+};