EXYNOS4210: Configure GPIO for uart

This patch configures the gpio values for UART
on Origen and SMDKV310 using pinmux

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index bd499b4..2042062 100644 (file)
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -408,9 +408,49 @@ static int exynos4_mmc_config(int peripheral, int flags)
        return 0;
 }
 
+static void exynos4_uart_config(int peripheral)
+{
+       struct exynos4_gpio_part1 *gpio1 =
+               (struct exynos4_gpio_part1 *)samsung_get_base_gpio_part1();
+       struct s5p_gpio_bank *bank;
+       int i, start, count;
+
+       switch (peripheral) {
+       case PERIPH_ID_UART0:
+               bank = &gpio1->a0;
+               start = 0;
+               count = 4;
+               break;
+       case PERIPH_ID_UART1:
+               bank = &gpio1->a0;
+               start = 4;
+               count = 4;
+               break;
+       case PERIPH_ID_UART2:
+               bank = &gpio1->a1;
+               start = 0;
+               count = 4;
+               break;
+       case PERIPH_ID_UART3:
+               bank = &gpio1->a1;
+               start = 4;
+               count = 2;
+               break;
+       }
+       for (i = start; i < start + count; i++) {
+               s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
+               s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
+       }
+}
 static int exynos4_pinmux_config(int peripheral, int flags)
 {
        switch (peripheral) {
+       case PERIPH_ID_UART0:
+       case PERIPH_ID_UART1:
+       case PERIPH_ID_UART2:
+       case PERIPH_ID_UART3:
+               exynos4_uart_config(peripheral);
+               break;
        case PERIPH_ID_I2C0:
        case PERIPH_ID_I2C1:
        case PERIPH_ID_I2C2:

diff --git a/board/samsung/origen/origen.c b/board/samsung/origen/origen.c
index 638e7b1..b7dbb91 100644 (file)
--- a/board/samsung/origen/origen.c
+++ b/board/samsung/origen/origen.c
@@ -25,6 +25,8 @@
 #include <asm/arch/cpu.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/mmc.h>
+#include <asm/arch/periph.h>
+#include <asm/arch/pinmux.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 struct exynos4_gpio_part1 *gpio1;
@@ -39,6 +41,50 @@ int board_init(void)
        return 0;
 }
 
+static int board_uart_init(void)
+{
+       int err;
+
+       err = exynos_pinmux_config(PERIPH_ID_UART0, PINMUX_FLAG_NONE);
+       if (err) {
+               debug("UART0 not configured\n");
+               return err;
+       }
+
+       err = exynos_pinmux_config(PERIPH_ID_UART1, PINMUX_FLAG_NONE);
+       if (err) {
+               debug("UART1 not configured\n");
+               return err;
+       }
+
+       err = exynos_pinmux_config(PERIPH_ID_UART2, PINMUX_FLAG_NONE);
+       if (err) {
+               debug("UART2 not configured\n");
+               return err;
+       }
+
+       err = exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
+       if (err) {
+               debug("UART3 not configured\n");
+               return err;
+       }
+
+       return 0;
+}
+
+#ifdef CONFIG_BOARD_EARLY_INIT_F
+int board_early_init_f(void)
+{
+       int err;
+       err = board_uart_init();
+       if (err) {
+               debug("UART init failed\n");
+               return err;
+       }
+       return err;
+}
+#endif
+
 int dram_init(void)
 {
        gd->ram_size    = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE)

diff --git a/board/samsung/smdkv310/smdkv310.c b/board/samsung/smdkv310/smdkv310.c
index 81ac8f6..015b920 100644 (file)
--- a/board/samsung/smdkv310/smdkv310.c
+++ b/board/samsung/smdkv310/smdkv310.c
@@ -26,6 +26,8 @@
 #include <asm/arch/cpu.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/mmc.h>
+#include <asm/arch/periph.h>
+#include <asm/arch/pinmux.h>
 #include <asm/arch/sromc.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -137,3 +139,47 @@ int board_mmc_init(bd_t *bis)
        return err;
 }
 #endif
+
+static int board_uart_init(void)
+{
+       int err;
+
+       err = exynos_pinmux_config(PERIPH_ID_UART0, PINMUX_FLAG_NONE);
+       if (err) {
+               debug("UART0 not configured\n");
+               return err;
+       }
+
+       err = exynos_pinmux_config(PERIPH_ID_UART1, PINMUX_FLAG_NONE);
+       if (err) {
+               debug("UART1 not configured\n");
+               return err;
+       }
+
+       err = exynos_pinmux_config(PERIPH_ID_UART2, PINMUX_FLAG_NONE);
+       if (err) {
+               debug("UART2 not configured\n");
+               return err;
+       }
+
+       err = exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
+       if (err) {
+               debug("UART3 not configured\n");
+               return err;
+       }
+
+       return 0;
+}
+
+#ifdef CONFIG_BOARD_EARLY_INIT_F
+int board_early_init_f(void)
+{
+       int err;
+       err = board_uart_init();
+       if (err) {
+               debug("UART init failed\n");
+               return err;
+       }
+       return err;
+}
+#endif

diff --git a/include/configs/origen.h b/include/configs/origen.h
index e179911..f71a463 100644 (file)
--- a/include/configs/origen.h
+++ b/include/configs/origen.h
@@ -36,6 +36,7 @@
 #define CONFIG_ARCH_CPU_INIT
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
+#define CONFIG_BOARD_EARLY_INIT_F
 
 /* Keep L2 Cache Disabled */
 #define CONFIG_L2_OFF                  1

diff --git a/include/configs/smdkv310.h b/include/configs/smdkv310.h
index 5e43066..db78127 100644 (file)
--- a/include/configs/smdkv310.h
+++ b/include/configs/smdkv310.h
@@ -36,6 +36,7 @@
 #define CONFIG_ARCH_CPU_INIT
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
+#define CONFIG_BOARD_EARLY_INIT_F
 
 /* Mach Type */
 #define CONFIG_MACH_TYPE               MACH_TYPE_SMDKV310