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

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Submitter Przemyslaw Marczak
Date Sept. 3, 2013, 12:45 p.m.
Message ID <1378212349-25425-1-git-send-email-p.marczak@samsung.com>
Download mbox | patch
Permalink /patch/272224/
State Changes Requested
Delegated to: Minkyu Kang
Headers show

Comments

Przemyslaw Marczak - Sept. 3, 2013, 12:45 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 |   31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)
Przemyslaw Marczak - Sept. 9, 2013, 8:04 a.m.
Hello Minkyu,

On 09/03/2013 02:45 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>

Could you review this patch, please?
Thank you.
Jaehoon Chung - Sept. 9, 2013, 8:18 a.m.
Hi,

On 09/03/2013 09:45 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 |   31 ++++++++++++++++++++++++++++++-
>  1 file changed, 30 insertions(+), 1 deletion(-)
> 
> diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
> index 5b3d6ef..7098fe7 100644
> --- a/board/samsung/goni/goni.c
> +++ b/board/samsung/goni/goni.c
> @@ -73,6 +73,7 @@ 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);
> @@ -95,7 +96,35 @@ 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);
> +		}
> +		if (s5p_mmc_init(2, 4))
> +			puts("MMC: Failed to init SD card (MMC:2).\n");

Well, i think this is not good.

ret = s5p_mmc_init(2, 5)
if (ret) {
	....
}
return ret;

Your checking is always returned "fail",if emmc is failed.

Best Regards,
Jaehoon Chung

> +	}
> +
> +	/* SD card init is optional so print information when it fails only */
> +	return ret;
>  }
>  #endif
>  
>
Minkyu Kang - Sept. 9, 2013, 10:51 a.m.
Dear Przemyslaw Marczak,

On 03/09/13 21:45, 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 |   31 ++++++++++++++++++++++++++++++-
>  1 file changed, 30 insertions(+), 1 deletion(-)
> 
> diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
> index 5b3d6ef..7098fe7 100644
> --- a/board/samsung/goni/goni.c
> +++ b/board/samsung/goni/goni.c
> @@ -73,6 +73,7 @@ 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);
> @@ -95,7 +96,35 @@ 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");
> +	}

please remove brace.

> +
> +	/*
> +	 * 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;

please add blank line.

> +			/* 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);
> +		}

please add blank line.

> +		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 */

maybe this comment should be located near s5p_mmc_init(2, 4).

> +	return ret;
>  }
>  #endif
>  
> 

Thanks,
Minkyu Kang.

Patch

diff --git a/board/samsung/goni/goni.c b/board/samsung/goni/goni.c
index 5b3d6ef..7098fe7 100644
--- a/board/samsung/goni/goni.c
+++ b/board/samsung/goni/goni.c
@@ -73,6 +73,7 @@  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);
@@ -95,7 +96,35 @@  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);
+		}
+		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