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

source/bootloader/u-boot-2020.01/board/toradex/colibri_vf/dcu.c

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2017 Toradex AG
+ *
+ * FSL DCU platform driver
+ */
+
+#include <asm/arch/crm_regs.h>
+#include <asm/io.h>
+#include <common.h>
+#include <fsl_dcu_fb.h>
+#include "div64.h"
+
+unsigned int dcu_set_pixel_clock(unsigned int pixclock)
+{
+	struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+	unsigned long long div;
+
+	clrbits_le32(&ccm->cscmr1, CCM_CSCMR1_DCU0_CLK_SEL);
+	clrsetbits_le32(&ccm->cscdr3,
+			CCM_CSCDR3_DCU0_DIV_MASK | CCM_CSCDR3_DCU0_EN,
+			CCM_CSCDR3_DCU0_DIV(0) | CCM_CSCDR3_DCU0_EN);
+	div = (unsigned long long)(PLL1_PFD2_FREQ / 1000);
+	do_div(div, pixclock);
+
+	return div;
+}
+
+int platform_dcu_init(struct fb_info *fbinfo,
+		      unsigned int xres,
+		      unsigned int yres,
+		      const char *port,
+		      struct fb_videomode *dcu_fb_videomode)
+{
+	fsl_dcu_init(fbinfo, xres, yres, 32);
+
+	return 0;
+}