[U-Boot] [PATCH] arm:exynos4:pinmux: Modify the gpio function for mmc
Piotr Wilczek
p.wilczek at samsung.com
Thu Jan 3 08:31:00 CET 2013
This patch add pinmux settings for Exynos4 for mmc0 and mmc2
Signed-off-by: Piotr Wilczek <p.wilczek at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
CC: Minkyu Kang <mk7.kang at samsung.com>
CC: Albert ARIBAUD <albert.u.boot at aribaud.net>
---
arch/arm/cpu/armv7/exynos/pinmux.c | 45 ++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index 20a4b84..ee58dac 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -370,6 +370,43 @@ static void exynos4_i2c_config(int peripheral, int flags)
}
}
+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) {
@@ -383,6 +420,14 @@ static int exynos4_pinmux_config(int peripheral, int flags)
case PERIPH_ID_I2C7:
exynos4_i2c_config(peripheral, flags);
break;
+ 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;
--
1.7.9.5
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