[U-Boot] [PATCH] arm:exynos4:pinmux: Modify the gpio function for mmc

[Jaehoon Chung]

Hi Piotr,

On 01/03/2013 04:31 PM, Piotr Wilczek wrote:
> 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.

Best Regards,
Jaehoon Chung
> 
> 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;
>