Commit 198a40b9f64d3c08b0303dd346ff4addca4c7e88
Committed by
Minkyu Kang
Minkyu Kang
1 parent
6e50e5ca02
Exists in
master
and in
53 other branches
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>
Showing 5 changed files with 134 additions and 0 deletions Side-by-side Diff
arch/arm/cpu/armv7/exynos/pinmux.c
| ... | ... | @@ -408,9 +408,49 @@ |
| 408 | 408 | return 0; |
| 409 | 409 | } |
| 410 | 410 | |
| 411 | +static void exynos4_uart_config(int peripheral) | |
| 412 | +{ | |
| 413 | + struct exynos4_gpio_part1 *gpio1 = | |
| 414 | + (struct exynos4_gpio_part1 *)samsung_get_base_gpio_part1(); | |
| 415 | + struct s5p_gpio_bank *bank; | |
| 416 | + int i, start, count; | |
| 417 | + | |
| 418 | + switch (peripheral) { | |
| 419 | + case PERIPH_ID_UART0: | |
| 420 | + bank = &gpio1->a0; | |
| 421 | + start = 0; | |
| 422 | + count = 4; | |
| 423 | + break; | |
| 424 | + case PERIPH_ID_UART1: | |
| 425 | + bank = &gpio1->a0; | |
| 426 | + start = 4; | |
| 427 | + count = 4; | |
| 428 | + break; | |
| 429 | + case PERIPH_ID_UART2: | |
| 430 | + bank = &gpio1->a1; | |
| 431 | + start = 0; | |
| 432 | + count = 4; | |
| 433 | + break; | |
| 434 | + case PERIPH_ID_UART3: | |
| 435 | + bank = &gpio1->a1; | |
| 436 | + start = 4; | |
| 437 | + count = 2; | |
| 438 | + break; | |
| 439 | + } | |
| 440 | + for (i = start; i < start + count; i++) { | |
| 441 | + s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE); | |
| 442 | + s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2)); | |
| 443 | + } | |
| 444 | +} | |
| 411 | 445 | static int exynos4_pinmux_config(int peripheral, int flags) |
| 412 | 446 | { |
| 413 | 447 | switch (peripheral) { |
| 448 | + case PERIPH_ID_UART0: | |
| 449 | + case PERIPH_ID_UART1: | |
| 450 | + case PERIPH_ID_UART2: | |
| 451 | + case PERIPH_ID_UART3: | |
| 452 | + exynos4_uart_config(peripheral); | |
| 453 | + break; | |
| 414 | 454 | case PERIPH_ID_I2C0: |
| 415 | 455 | case PERIPH_ID_I2C1: |
| 416 | 456 | case PERIPH_ID_I2C2: |
board/samsung/origen/origen.c
| ... | ... | @@ -25,6 +25,8 @@ |
| 25 | 25 | #include <asm/arch/cpu.h> |
| 26 | 26 | #include <asm/arch/gpio.h> |
| 27 | 27 | #include <asm/arch/mmc.h> |
| 28 | +#include <asm/arch/periph.h> | |
| 29 | +#include <asm/arch/pinmux.h> | |
| 28 | 30 | |
| 29 | 31 | DECLARE_GLOBAL_DATA_PTR; |
| 30 | 32 | struct exynos4_gpio_part1 *gpio1; |
| ... | ... | @@ -38,6 +40,50 @@ |
| 38 | 40 | gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL); |
| 39 | 41 | return 0; |
| 40 | 42 | } |
| 43 | + | |
| 44 | +static int board_uart_init(void) | |
| 45 | +{ | |
| 46 | + int err; | |
| 47 | + | |
| 48 | + err = exynos_pinmux_config(PERIPH_ID_UART0, PINMUX_FLAG_NONE); | |
| 49 | + if (err) { | |
| 50 | + debug("UART0 not configured\n"); | |
| 51 | + return err; | |
| 52 | + } | |
| 53 | + | |
| 54 | + err = exynos_pinmux_config(PERIPH_ID_UART1, PINMUX_FLAG_NONE); | |
| 55 | + if (err) { | |
| 56 | + debug("UART1 not configured\n"); | |
| 57 | + return err; | |
| 58 | + } | |
| 59 | + | |
| 60 | + err = exynos_pinmux_config(PERIPH_ID_UART2, PINMUX_FLAG_NONE); | |
| 61 | + if (err) { | |
| 62 | + debug("UART2 not configured\n"); | |
| 63 | + return err; | |
| 64 | + } | |
| 65 | + | |
| 66 | + err = exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE); | |
| 67 | + if (err) { | |
| 68 | + debug("UART3 not configured\n"); | |
| 69 | + return err; | |
| 70 | + } | |
| 71 | + | |
| 72 | + return 0; | |
| 73 | +} | |
| 74 | + | |
| 75 | +#ifdef CONFIG_BOARD_EARLY_INIT_F | |
| 76 | +int board_early_init_f(void) | |
| 77 | +{ | |
| 78 | + int err; | |
| 79 | + err = board_uart_init(); | |
| 80 | + if (err) { | |
| 81 | + debug("UART init failed\n"); | |
| 82 | + return err; | |
| 83 | + } | |
| 84 | + return err; | |
| 85 | +} | |
| 86 | +#endif | |
| 41 | 87 | |
| 42 | 88 | int dram_init(void) |
| 43 | 89 | { |
board/samsung/smdkv310/smdkv310.c
| ... | ... | @@ -26,6 +26,8 @@ |
| 26 | 26 | #include <asm/arch/cpu.h> |
| 27 | 27 | #include <asm/arch/gpio.h> |
| 28 | 28 | #include <asm/arch/mmc.h> |
| 29 | +#include <asm/arch/periph.h> | |
| 30 | +#include <asm/arch/pinmux.h> | |
| 29 | 31 | #include <asm/arch/sromc.h> |
| 30 | 32 | |
| 31 | 33 | DECLARE_GLOBAL_DATA_PTR; |
| ... | ... | @@ -134,6 +136,50 @@ |
| 134 | 136 | s5p_gpio_set_pull(&gpio2->k2, i, GPIO_PULL_UP); |
| 135 | 137 | } |
| 136 | 138 | err = s5p_mmc_init(2, 4); |
| 139 | + return err; | |
| 140 | +} | |
| 141 | +#endif | |
| 142 | + | |
| 143 | +static int board_uart_init(void) | |
| 144 | +{ | |
| 145 | + int err; | |
| 146 | + | |
| 147 | + err = exynos_pinmux_config(PERIPH_ID_UART0, PINMUX_FLAG_NONE); | |
| 148 | + if (err) { | |
| 149 | + debug("UART0 not configured\n"); | |
| 150 | + return err; | |
| 151 | + } | |
| 152 | + | |
| 153 | + err = exynos_pinmux_config(PERIPH_ID_UART1, PINMUX_FLAG_NONE); | |
| 154 | + if (err) { | |
| 155 | + debug("UART1 not configured\n"); | |
| 156 | + return err; | |
| 157 | + } | |
| 158 | + | |
| 159 | + err = exynos_pinmux_config(PERIPH_ID_UART2, PINMUX_FLAG_NONE); | |
| 160 | + if (err) { | |
| 161 | + debug("UART2 not configured\n"); | |
| 162 | + return err; | |
| 163 | + } | |
| 164 | + | |
| 165 | + err = exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE); | |
| 166 | + if (err) { | |
| 167 | + debug("UART3 not configured\n"); | |
| 168 | + return err; | |
| 169 | + } | |
| 170 | + | |
| 171 | + return 0; | |
| 172 | +} | |
| 173 | + | |
| 174 | +#ifdef CONFIG_BOARD_EARLY_INIT_F | |
| 175 | +int board_early_init_f(void) | |
| 176 | +{ | |
| 177 | + int err; | |
| 178 | + err = board_uart_init(); | |
| 179 | + if (err) { | |
| 180 | + debug("UART init failed\n"); | |
| 181 | + return err; | |
| 182 | + } | |
| 137 | 183 | return err; |
| 138 | 184 | } |
| 139 | 185 | #endif |
include/configs/origen.h
include/configs/smdkv310.h