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 --- Chnages in V2: - None arch/arm/cpu/armv7/exynos/pinmux.c | 40 +++++++++++++++++++++++++++++++ board/samsung/origen/origen.c | 46 ++++++++++++++++++++++++++++++++++++ board/samsung/smdkv310/smdkv310.c | 46 ++++++++++++++++++++++++++++++++++++ include/configs/origen.h | 1 + include/configs/smdkv310.h | 1 + 5 files changed, 134 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c index bd499b4..2042062 100644 --- 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 --- 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 --- 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 --- 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 --- 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