Patchwork [U-Boot] arm:goni:mmc: Add sd card detection and initialization.

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Submitter Przemyslaw Marczak
Date Sept. 9, 2013, 12:50 p.m.
Message ID <1378731002-12335-1-git-send-email-p.marczak@samsung.com>
Download mbox | patch
Permalink /patch/273562/
State Changes Requested
Delegated to: Minkyu Kang
Headers show

Comments

Przemyslaw Marczak - Sept. 9, 2013, 12:50 p.m.
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@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Minkyu Kang <mk7.kang@samsung.com>
---
 board/samsung/goni/goni.c |   33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)
Jaehoon Chung - Sept. 10, 2013, 2:30 a.m.
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@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> CC: Minkyu Kang <mk7.kang@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
>  
>

Patch

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");
+	}
+
+	return ret | ret_sd;
 }
 #endif