linux-kernel - Re: [PATCH] Revert "mmc: sdhci: Fix incorrect switch to HS mode"

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Date:   Tue, 10 Dec 2019 10:51:00 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Faiz Abbas <faiz_abbas@...com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Al Cooper <alcooperx@...il.com>
Subject: Re: [PATCH] Revert "mmc: sdhci: Fix incorrect switch to HS mode"

On Thu, 28 Nov 2019 at 12:03, Faiz Abbas <faiz_abbas@...com> wrote:
>
> This reverts commit c894e33ddc1910e14d6f2a2016f60ab613fd8b37.
>
> This commit aims to treat SD High speed and SDR25 as the same while
> setting UHS Timings in HOST_CONTROL2 which leads to failures with some
> SD cards in AM65x. Revert this commit.
>
> The issue this commit was trying to fix can be implemented in a platform
> specific callback instead of common sdhci code.
>
> Cc: <stable@...r.kernel.org>
> Signed-off-by: Faiz Abbas <faiz_abbas@...com>

Applied for fixes, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/sdhci.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index 3140fe2e5dba..296d955ede59 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -1882,9 +1882,7 @@ void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
>                 ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
>         else if (timing == MMC_TIMING_UHS_SDR12)
>                 ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
> -       else if (timing == MMC_TIMING_SD_HS ||
> -                timing == MMC_TIMING_MMC_HS ||
> -                timing == MMC_TIMING_UHS_SDR25)
> +       else if (timing == MMC_TIMING_UHS_SDR25)
>                 ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
>         else if (timing == MMC_TIMING_UHS_SDR50)
>                 ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
> --
> 2.19.2
>