[U-Boot] [PATCH 2/3] arm:goni:mmc: Add sd card detection and initialization.

Przemyslaw Marczak
2013-08-28T07:39:47Z

Hello Minkyu,

> This change allow to use sd card on Goni the same like mmc 0.
> SD card is mmc dev 1, so it can be used like this: "fatls mmc 1:2".

Could you review this patch, please?

>
> Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> CC: Minkyu Kang <mk7.kang@samsung.com>
> ---
> board/samsung/goni/goni.c | 32 +++++++++++++++++++++++++++++++-
> 1 file changed, 31 insertions(+), 1 deletion(-)
>
> diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
> index c05801d..3b236b4 100644
> --- a/board/samsung/goni/goni.c
> +++ b/board/samsung/goni/goni.c
> @@ -69,6 +69,7 @@ int checkboard(void)
> int board_mmc_init(bd_t *bis)
> {
> int i;
> + int ret;
>
> /* MASSMEMORY_EN: XMSMDATA7: GPJ2[7] output high */
> s5p_gpio_direction_output(&s5pc110_gpio->j2, 7, 1);
> @@ -91,7 +92,36 @@ int board_mmc_init(bd_t *bis)
> s5p_gpio_set_drv(&s5pc110_gpio->g0, i, GPIO_DRV_4X);
> }
>
> - return s5p_mmc_init(0, 4);
> + ret = s5p_mmc_init(0, 4);
> + if (ret) {
> + puts("MMC: Failed to init MMC:0.\n");
> + return ret;
> + }
> +
> + /*
> + * SD card (T_FLASH) detect and init
> + * T_FLASH_DETECT: EINT28: GPH3[4] input mode
> + */
> + s5p_gpio_cfg_pin(&s5pc110_gpio->h3, 4, GPIO_INPUT);
> + s5p_gpio_set_pull(&s5pc110_gpio->h3, 4, GPIO_PULL_UP);
> +
> + if (!s5p_gpio_get_value(&s5pc110_gpio->h3, 4)) {
> + for (i = 0; i < 7; i++) {
> + if (i == 2)
> + continue;
> + /* GPG2[0:6] special function 2 */
> + s5p_gpio_cfg_pin(&s5pc110_gpio->g2, i, 0x2);
> + /* GPG2[0:6] pull disable */
> + s5p_gpio_set_pull(&s5pc110_gpio->g2, i, GPIO_PULL_NONE);
> + /* GPG2[0:6] drv 4x */
> + s5p_gpio_set_drv(&s5pc110_gpio->g2, i, GPIO_DRV_4X);
> + }
> + if (s5p_mmc_init(2, 4))
> + puts("MMC: Failed to init SD card (MMC:2).\n");
> + }
> +
> + /* SD card init is optional so print information when it fails only */
> + return ret;
> }
> #endif
>
>

--
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com