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 973b4f9dcbd5513934b7235374627bed6a4a72e8..22eeb77d41fa2f9eed7b315c869364945aa617d4 100644 (file)
--- 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 @@ void board_debug_uart_init(void)
 
 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;
 }