[PATCH] mmc: sdhci: Enable high speed conditional on the correspnding bit

[Michal Simek]

Hi,

čt 23. 7. 2020 v 6:12 odesílatel Faiz Abbas <faiz_abbas at ti.com> napsal:
>
> The capabilities register has a field to indicate whether the host
> supports high speed mode or not. Add high speed host_caps based on
> this bit instead of enabling it by default.
>
> Signed-off-by: Faiz Abbas <faiz_abbas at ti.com>
> ---
>  drivers/mmc/sdhci.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
> index 16989dcf05..48d639fe93 100644
> --- a/drivers/mmc/sdhci.c
> +++ b/drivers/mmc/sdhci.c
> @@ -866,7 +866,10 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host,
>         if (host->quirks & SDHCI_QUIRK_BROKEN_VOLTAGE)
>                 cfg->voltages |= host->voltages;
>
> -       cfg->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
> +       if (caps & SDHCI_CAN_DO_HISPD)
> +               cfg->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz;
> +
> +       cfg->host_caps |= MMC_MODE_4BIT;
>
>         /* Since Host Controller Version3.0 */
>         if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
> --
> 2.17.1
>

Reviewed-by: Michal Simek <michal.simek at xilnx.com>
Tested-by: Michal Simek <michal.simek at xilnx.com> (zcu104 with
sdhci-caps-mask = <0 0x200000>;)

Thanks,
Michal


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
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Maintainer of Linux kernel - Xilinx Microblaze
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