rockchip: rk3568: add arch_cpu_init()
We configured the drive strength and security of EMMC in
arch_cpu_init().
Signed-off-by: Nico Cheng <nico.cheng@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/rk3568/rk3568.c b/arch/arm/mach-rockchip/rk3568/rk3568.c
index 973b4f9..22eeb77 100644
--- a/arch/arm/mach-rockchip/rk3568/rk3568.c
+++ b/arch/arm/mach-rockchip/rk3568/rk3568.c
@@ -11,9 +11,18 @@
#include <asm/arch-rockchip/hardware.h>
#include <dt-bindings/clock/rk3568-cru.h>
-#define PMUGRF_BASE 0xfdc20000
-#define GRF_BASE 0xfdc60000
-
+#define PMUGRF_BASE 0xfdc20000
+#define GRF_BASE 0xfdc60000
+#define GRF_GPIO1B_DS_2 0x218
+#define GRF_GPIO1B_DS_3 0x21c
+#define GRF_GPIO1C_DS_0 0x220
+#define GRF_GPIO1C_DS_1 0x224
+#define GRF_GPIO1C_DS_2 0x228
+#define GRF_GPIO1C_DS_3 0x22c
+#define SGRF_BASE 0xFDD18000
+#define SGRF_SOC_CON4 0x10
+#define EMMC_HPROT_SECURE_CTRL 0x03
+#define SDMMC0_HPROT_SECURE_CTRL 0x01
/* PMU_GRF_GPIO0D_IOMUX_L */
enum {
GPIO0D1_SHIFT = 4,
@@ -81,5 +90,17 @@
int arch_cpu_init(void)
{
+#ifdef CONFIG_SPL_BUILD
+ /* Set the emmc sdmmc0 to secure */
+ rk_clrreg(SGRF_BASE + SGRF_SOC_CON4, (EMMC_HPROT_SECURE_CTRL << 11
+ | SDMMC0_HPROT_SECURE_CTRL << 4));
+ /* set the emmc driver strength to level 2 */
+ writel(0x3f3f0707, GRF_BASE + GRF_GPIO1B_DS_2);
+ writel(0x3f3f0707, GRF_BASE + GRF_GPIO1B_DS_3);
+ writel(0x3f3f0707, GRF_BASE + GRF_GPIO1C_DS_0);
+ writel(0x3f3f0707, GRF_BASE + GRF_GPIO1C_DS_1);
+ writel(0x3f3f0707, GRF_BASE + GRF_GPIO1C_DS_2);
+ writel(0x3f3f0707, GRF_BASE + GRF_GPIO1C_DS_3);
+#endif
return 0;
}