[PATCH v2] Fix MMC access on Sabrelite

[Troy Kisky]

On 6/11/2020 10:53 AM, Martyn Welch wrote:
> It appears that MMC access on the Sabrelite has been broken since
> cdcaee9518:
> 
> Loading Environment from MMC... Card did not respond to voltage select!
> *** Warning - No block device, using default environment
> 
> Remove the board_mmc_init() and related entries now that we should be
> using DM_MMC, add PINCTRL so that things work as expected.
> 
> Signed-off-by: Martyn Welch <martyn.welch at collabora.com>
> ---
> 
> Changes in v2:
> - Removed now redundant mmc header.
> 
>  board/boundary/nitrogen6x/nitrogen6x.c | 72 --------------------------
>  configs/mx6qsabrelite_defconfig        |  3 ++
>  2 files changed, 3 insertions(+), 72 deletions(-)
> 
> diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c
> index d49725daa8..b3b121bad8 100644
> --- a/board/boundary/nitrogen6x/nitrogen6x.c
> +++ b/board/boundary/nitrogen6x/nitrogen6x.c
> @@ -25,7 +25,6 @@
>  #include <asm/mach-imx/spi.h>
>  #include <asm/mach-imx/boot_mode.h>
>  #include <asm/mach-imx/video.h>
> -#include <mmc.h>
>  #include <fsl_esdhc_imx.h>
>  #include <micrel.h>
>  #include <miiphy.h>
> @@ -161,26 +160,6 @@ static iomux_v3_cfg_t const usdhc2_pads[] = {
>  	IOMUX_PAD_CTRL(SD2_DAT3__SD2_DATA3, USDHC_PAD_CTRL),
>  };
>  
> -static iomux_v3_cfg_t const usdhc3_pads[] = {
> -	IOMUX_PAD_CTRL(SD3_CLK__SD3_CLK, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD3_CMD__SD3_CMD, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD3_DAT0__SD3_DATA0, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD3_DAT1__SD3_DATA1, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD3_DAT2__SD3_DATA2, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD3_DAT3__SD3_DATA3, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD3_DAT5__GPIO7_IO00, NO_PAD_CTRL), /* CD */
> -};
> -
> -static iomux_v3_cfg_t const usdhc4_pads[] = {
> -	IOMUX_PAD_CTRL(SD4_CLK__SD4_CLK, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD4_CMD__SD4_CMD, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD4_DAT0__SD4_DATA0, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD4_DAT1__SD4_DATA1, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD4_DAT2__SD4_DATA2, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(SD4_DAT3__SD4_DATA3, USDHC_PAD_CTRL),
> -	IOMUX_PAD_CTRL(NANDF_D6__GPIO2_IO06, NO_PAD_CTRL), /* CD */
> -};
> -
>  static iomux_v3_cfg_t const enet_pads1[] = {
>  	IOMUX_PAD_CTRL(ENET_MDIO__ENET_MDIO, ENET_PAD_CTRL),
>  	IOMUX_PAD_CTRL(ENET_MDC__ENET_MDC, ENET_PAD_CTRL),
> @@ -305,57 +284,6 @@ int board_ehci_power(int port, int on)
>  
>  #endif
>  
> -#ifdef CONFIG_FSL_ESDHC_IMX
> -static struct fsl_esdhc_cfg usdhc_cfg[2] = {
> -	{USDHC3_BASE_ADDR},
> -	{USDHC4_BASE_ADDR},
> -};
> -
> -int board_mmc_getcd(struct mmc *mmc)
> -{
> -	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
> -	int gp_cd = (cfg->esdhc_base == USDHC3_BASE_ADDR) ? IMX_GPIO_NR(7, 0) :
> -			IMX_GPIO_NR(2, 6);
> -
> -	gpio_direction_input(gp_cd);
> -	return !gpio_get_value(gp_cd);
> -}
> -
> -int board_mmc_init(bd_t *bis)
> -{
> -	int ret;
> -	u32 index = 0;
> -
> -	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
> -	usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
> -
> -	usdhc_cfg[0].max_bus_width = 4;
> -	usdhc_cfg[1].max_bus_width = 4;
> -
> -	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
> -		switch (index) {
> -		case 0:
> -			SETUP_IOMUX_PADS(usdhc3_pads);
> -			break;
> -		case 1:
> -		       SETUP_IOMUX_PADS(usdhc4_pads);
> -		       break;
> -		default:
> -		       printf("Warning: you configured more USDHC controllers"
> -			       "(%d) then supported by the board (%d)\n",
> -			       index + 1, CONFIG_SYS_FSL_USDHC_NUM);
> -		       return -EINVAL;
> -		}
> -
> -		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
> -		if (ret)
> -			return ret;
> -	}
> -
> -	return 0;
> -}
> -#endif
> -
>  #ifdef CONFIG_MXC_SPI
>  int board_spi_cs_gpio(unsigned bus, unsigned cs)
>  {
> diff --git a/configs/mx6qsabrelite_defconfig b/configs/mx6qsabrelite_defconfig
> index ea338c1b53..39b0ef7a42 100644
> --- a/configs/mx6qsabrelite_defconfig
> +++ b/configs/mx6qsabrelite_defconfig
> @@ -28,6 +28,7 @@ CONFIG_CMD_GPT=y
>  # CONFIG_RANDOM_UUID is not set
>  CONFIG_CMD_I2C=y
>  CONFIG_CMD_MMC=y
> +# CONFIG_CMD_PINMUX is not set
>  CONFIG_CMD_SATA=y
>  CONFIG_CMD_USB=y
>  CONFIG_CMD_USB_MASS_STORAGE=y
> @@ -55,6 +56,8 @@ CONFIG_PHYLIB=y
>  CONFIG_PHY_MICREL=y
>  CONFIG_PHY_MICREL_KSZ90X1=y
>  CONFIG_MII=y
> +CONFIG_PINCTRL=y
> +CONFIG_PINCTRL_IMX6=y
>  CONFIG_SPI=y
>  CONFIG_DM_SPI=y
>  CONFIG_MXC_SPI=y
> 
Tested-by: Troy Kisky <troy.kisky at boundarydevices.com>
Acked-by: Troy Kisky <troy.kisky at boundarydevices.com>


But for me, it worked both before and after this patch.

If you feel like sending a version 3, you can update these too.
   nitrogen6dl2g_defconfig
    nitrogen6dl_defconfig
    nitrogen6q2g_defconfig
    nitrogen6q_defconfig
    nitrogen6s1g_defconfig

Otherwise, I'll do it later

Thanks
Troy