This patch configures the gpio values for UART
on Origen and SMDKV310 using pinmux
Signed-off-by: Rajeshwari Shinde <rajeshwar...@samsung.com>
---
arch/arm/cpu/armv7/exynos/pinmux.c | 40 +++++++++++++++++++++++++++++++
board/samsung/origen/origen.c | 46 ++++++++++++++++++++++++++++++++++++
board/samsung/smdkv310/smdkv310.c | 44 ++++++++++++++++++++++++++++++++++
include/configs/origen.h | 1 +
include/configs/smdkv310.h | 1 +
5 files changed, 132 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..805a894 100644
--- a/board/samsung/smdkv310/smdkv310.c
+++ b/board/samsung/smdkv310/smdkv310.c
@@ -137,3 +137,47 @@ 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 ff2b24d..da59d6d 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 b796b46..a5abe11 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
--
1.7.4.4
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