[U-Boot] [PATCH v3] dw_mmc: turn on the IO supply

[Simon Glass]

On Mon, 13 May 2019 at 07:25, Urja Rannikko <urjaman at gmail.com> wrote:
>
> Fixes the microSD slot on the ASUS C201.
>
> Signed-off-by: Urja Rannikko <urjaman at gmail.com>
> ---
> v2: use #if CONFIG_IS_ENABLED(DM_REGULATOR)
> v3: Move ret variable inside the if block (only used there)
> ---
>  drivers/mmc/dw_mmc.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)

Reviewed-by: Simon Glass <sjg at chromium.org>

>
> diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
> index 1992d61182..22f6c7eefd 100644
> --- a/drivers/mmc/dw_mmc.c
> +++ b/drivers/mmc/dw_mmc.c
> @@ -13,6 +13,7 @@
>  #include <mmc.h>
>  #include <dwmmc.h>
>  #include <wait_bit.h>
> +#include <power/regulator.h>
>
>  #define PAGE_SIZE 4096
>
> @@ -493,6 +494,21 @@ static int dwmci_set_ios(struct mmc *mmc)
>         if (host->clksel)
>                 host->clksel(host);
>
> +#if CONFIG_IS_ENABLED(DM_REGULATOR)

I wonder if we could use if() here instead?


> +       if (mmc->vqmmc_supply) {
> +               int ret;
> +
> +               if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180)
> +                       regulator_set_value(mmc->vqmmc_supply, 1800000);
> +               else
> +                       regulator_set_value(mmc->vqmmc_supply, 3300000);
> +
> +               ret = regulator_set_enable_if_allowed(mmc->vqmmc_supply, true);
> +               if (ret)
> +                       return ret;
> +       }
> +#endif
> +
>         return 0;
>  }
>
> --
> 2.21.0
>