[U-Boot] [PATCH 2/2] s5p sdhci: call pinmux for card's gpio pins before use them

[Lukasz Majewski <l.majewski@samsung.com>]

Hi Przemyslaw,

> The SD card detection depends on checking one pin state.
> But the pin was configured after card was detected, which is wrong.
> 
> This commit fixes this, by moving call to pinmux before use the pin.
> 
> Tested-on: Odroid U3 and Odroid X2.
> 
> Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
> Cc: Guillaume GARDET <guillaume.gardet@free.fr>
> Cc: Lukasz Majewski <l.majewski@samsung.com>
> Cc: Jaehoon Chung <jh80.chung@samsung.com>
> Cc: Minkyu Kang <mk7.kang@samsung.com>
> Cc: Simon Glass <sjg@chromium.org>
> ---
>  drivers/mmc/s5p_sdhci.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c
> index 15ecfee..44353c7 100644
> --- a/drivers/mmc/s5p_sdhci.c
> +++ b/drivers/mmc/s5p_sdhci.c
> @@ -106,6 +106,12 @@ static int do_sdhci_init(struct sdhci_host *host)
>  	flag = host->bus_width == 8 ? PINMUX_FLAG_8BIT_MODE :
> PINMUX_FLAG_NONE; dev_id = host->index + PERIPH_ID_SDMMC0;
>  
> +	ret = exynos_pinmux_config(dev_id, flag);
> +	if (ret) {
> +		printf("external SD not configured\n");
> +		return ret;
> +	}
> +
>  	if (dm_gpio_is_valid(&host->pwr_gpio)) {
>  		dm_gpio_set_value(&host->pwr_gpio, 1);
>  		ret = exynos_pinmux_config(dev_id, flag);
> @@ -121,12 +127,6 @@ static int do_sdhci_init(struct sdhci_host *host)
>  			debug("no SD card detected (%d)\n", ret);
>  			return -ENODEV;
>  		}
> -
> -		ret = exynos_pinmux_config(dev_id, flag);
> -		if (ret) {
> -			printf("external SD not configured\n");
> -			return ret;
> -		}
>  	}
>  
>  	return s5p_sdhci_core_init(host);
> @@ -193,7 +193,7 @@ static int process_nodes(const void *blob, int
> node_list[], int count) }
>  
>  		ret = do_sdhci_init(host);
> -		if (ret) {
> +		if (ret && ret != -ENODEV) {
>  			printf("%s: failed to initialize dev %d
> (%d)\n", __func__, i, ret); failed++;
>  		}


Tested-by: Lukasz Majewski <l.majewski@samsung.com>

Test HW: Exynos 4210 - Trats board.

-- 
Best regards,

Lukasz Majewski

Samsung R&D Institute Poland (SRPOL) | Linux Platform Group