diff options
| author | Piotr Wilczek <p.wilczek@samsung.com> | 2012-09-20 00:19:57 +0000 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2012-11-15 21:08:18 +0900 |
| commit | a3eab2ac4156fb12f9c29ba4badd68a37926397b (patch) | |
| tree | bd52a915a806350fcd7a043d2226a6d5102c8424 /arch/arm | |
| parent | 11c5bc0b9d3d0f3416734515e612fcbf962afb6e (diff) | |
| download | u-boot-a3eab2ac4156fb12f9c29ba4badd68a37926397b.zip u-boot-a3eab2ac4156fb12f9c29ba4badd68a37926397b.tar.gz u-boot-a3eab2ac4156fb12f9c29ba4badd68a37926397b.tar.bz2 | |
arm:exynos4:pinmux: Modify the gpio function for mmc
This patch add pinmux settings for Exynos4 for mmc0 and mmc2
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/exynos/pinmux.c | 58 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-exynos/periph.h | 1 |
2 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c index 7776add..5796d56 100644 --- a/arch/arm/cpu/armv7/exynos/pinmux.c +++ b/arch/arm/cpu/armv7/exynos/pinmux.c @@ -265,10 +265,68 @@ static int exynos5_pinmux_config(int peripheral, int flags) return 0; } +static int exynos4_mmc_config(int peripheral, int flags) +{ + struct exynos4_gpio_part2 *gpio2 = + (struct exynos4_gpio_part2 *)samsung_get_base_gpio_part2(); + struct s5p_gpio_bank *bank, *bank_ext; + int i; + + switch (peripheral) { + case PERIPH_ID_SDMMC0: + bank = &gpio2->k0; + bank_ext = &gpio2->k1; + break; + case PERIPH_ID_SDMMC2: + bank = &gpio2->k2; + bank_ext = &gpio2->k3; + break; + default: + return -1; + } + for (i = 0; i < 7; i++) { + if (i == 2) + continue; + s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2)); + s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE); + s5p_gpio_set_drv(bank, i, GPIO_DRV_4X); + } + if (flags & PINMUX_FLAG_8BIT_MODE) { + for (i = 3; i < 7; i++) { + s5p_gpio_cfg_pin(bank_ext, i, GPIO_FUNC(0x3)); + s5p_gpio_set_pull(bank_ext, i, GPIO_PULL_NONE); + s5p_gpio_set_drv(bank_ext, i, GPIO_DRV_4X); + } + } + + return 0; +} + +static int exynos4_pinmux_config(int peripheral, int flags) +{ + switch (peripheral) { + case PERIPH_ID_SDMMC0: + case PERIPH_ID_SDMMC2: + return exynos4_mmc_config(peripheral, flags); + case PERIPH_ID_SDMMC1: + case PERIPH_ID_SDMMC3: + case PERIPH_ID_SDMMC4: + printf("SDMMC device %d not implemented\n", peripheral); + return -1; + default: + debug("%s: invalid peripheral %d", __func__, peripheral); + return -1; + } + + return 0; +} + int exynos_pinmux_config(int peripheral, int flags) { if (cpu_is_exynos5()) return exynos5_pinmux_config(peripheral, flags); + else if (cpu_is_exynos4()) + return exynos4_pinmux_config(peripheral, flags); else { debug("pinmux functionality not supported\n"); return -1; diff --git a/arch/arm/include/asm/arch-exynos/periph.h b/arch/arm/include/asm/arch-exynos/periph.h index b861d7d..082611c 100644 --- a/arch/arm/include/asm/arch-exynos/periph.h +++ b/arch/arm/include/asm/arch-exynos/periph.h @@ -42,6 +42,7 @@ enum periph_id { PERIPH_ID_SDMMC1, PERIPH_ID_SDMMC2, PERIPH_ID_SDMMC3, + PERIPH_ID_SDMMC4, PERIPH_ID_SROMC, PERIPH_ID_UART0, PERIPH_ID_UART1, |