[U-Boot] [PATCH] arm:goni:mmc: Add sd card detection and initialization.
Jaehoon Chung
jh80.chung at samsung.com
Tue Sep 10 04:30:50 CEST 2013
Dear Przemyslaw,
On 09/09/2013 09:50 PM, Przemyslaw Marczak wrote:
> 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".
> SD card is inited even if eMMC initialization fails.
>
> Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> CC: Minkyu Kang <mk7.kang at samsung.com>
> ---
> board/samsung/goni/goni.c | 33 +++++++++++++++++++++++++++++++--
> 1 file changed, 31 insertions(+), 2 deletions(-)
>
> diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
> index 5b3d6ef..d63e902 100644
> --- a/board/samsung/goni/goni.c
> +++ b/board/samsung/goni/goni.c
> @@ -72,7 +72,7 @@ int checkboard(void)
> #ifdef CONFIG_GENERIC_MMC
> int board_mmc_init(bd_t *bis)
> {
> - int i;
> + int i, ret, ret_sd = 0;
>
> /* MASSMEMORY_EN: XMSMDATA7: GPJ2[7] output high */
> s5p_gpio_direction_output(&s5pc110_gpio->j2, 7, 1);
> @@ -95,7 +95,36 @@ 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");
> +
> + /*
> + * 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);
> + }
> +
> + ret_sd = s5p_mmc_init(2, 4)
> + if (ret_sd)
> + puts("MMC: Failed to init SD card (MMC:2).\n");
I think you can refer to trats.c.
Best Regards,
Jaehoon Chung
> + }
> +
> + return ret | ret_sd;
> }
> #endif
>
>
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