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 <[email protected]>

Signed-off-by Kyungmin Park <[email protected]>

CC Minkyu Kang <[email protected]>

CC Albert ARIBAUD <[email protected]>

---
 arch/arm/cpu/armv7/exynos/pinmux.c |   45 ++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

arch/arm/cpu/armv7/exynos/pinmux.c +45 -0

index 20a4b84..ee58dac 100644
@@ -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;

Quoted 1 line

This patch add pinmux settings for Exynos4 for mmc0 and mmc2

Didn't consider about the mmc4? I know that exynos4 can be used mmc4 for eMMC.

Hi Jaehoon,

Quoted 4 lines · Piotr Wilczek

Quoted 1 line

This patch add pinmux settings for Exynos4 for mmc0 and mmc2

Didn't consider about the mmc4? I know that exynos4 can be used mmc4 for eMMC.

This patch shall be regarded as fixing regression introduced after merge.

We would like to stick (at least for now) to eMMC cotrollers tied to mmc0 and mmc2.

When mmc4 (dw_mmc) will be enabled, then surely we will modify the pinmux code.

This patch add pinmux settings for Exynos4 for mmc0 and mmc2

Signed-off-by Piotr Wilczek <[email protected]>

Signed-off-by Kyungmin Park <[email protected]>

CC Minkyu Kang <[email protected]>

CC Albert ARIBAUD <[email protected]>

---
 arch/arm/cpu/armv7/exynos/pinmux.c |   45 ++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

Quoted 10 lines · Piotr Wilczek

This patch add pinmux settings for Exynos4 for mmc0 and mmc2

Signed-off-by Piotr Wilczek <[email protected]>

Signed-off-by Kyungmin Park <[email protected]>

CC Minkyu Kang <[email protected]>

CC Albert ARIBAUD <[email protected]>

---
 arch/arm/cpu/armv7/exynos/pinmux.c |   45 ++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

applied to u-boot-samsung.

Thanks,
Minkyu Kang.

Hi Minkyu,

Quoted 12 lines · Minkyu Kang

Quoted 10 lines · Piotr Wilczek

This patch add pinmux settings for Exynos4 for mmc0 and mmc2

Signed-off-by Piotr Wilczek <[email protected]>

Signed-off-by Kyungmin Park <[email protected]>

CC Minkyu Kang <[email protected]>

CC Albert ARIBAUD <[email protected]>

---
 arch/arm/cpu/armv7/exynos/pinmux.c |   45 ++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

Quoted 1 line

applied to u-boot-samsung.

So I guess you'll be sending out a pull request for the Samung tree soon, right?