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

[Peng Fan]

Hi Kever,

You could pick it up, not depends on mmc branch.

Thanks,
Peng.

From: Kever Yang [mailto:kever.yang at rock-chips.com]
Sent: 2019年7月26日 15:06
To: Peng Fan <peng.fan at nxp.com>
Cc: Urja Rannikko <urjaman at gmail.com>; u-boot at lists.denx.de
Subject: Re: [U-Boot] [PATCH v3] dw_mmc: turn on the IO supply

Hi Peng, Simon,

This patch is delegate to Philipp now, does this patch should go to Rockchip branch first?
I can do it if yes, but double with you in case this patch should go to mmc branch first.

Thanks,
- Kever

Peng Fan <peng.fan at nxp.com<mailto:peng.fan at nxp.com>> 于2019年5月20日周一 下午3:04写道：
> Subject: [U-Boot] [PATCH v3] dw_mmc: turn on the IO supply
>
> Fixes the microSD slot on the ASUS C201.
>
> Signed-off-by: Urja Rannikko <urjaman at gmail.com<mailto: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(+)
>
> 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)
> +     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
> +

Reviewed-by: Peng Fan <peng.fan at nxp.com<mailto:peng.fan at nxp.com>>

>       return 0;
>  }
>
> --
> 2.21.0
>
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