[U-Boot] [PATCH v1 2/2] mmc: fix bug in mmc_startup_v4()

[Sam Protsenko]

On 9 February 2018 at 13:09, Jean-Jacques Hiblot <jjhiblot at ti.com> wrote:
> The correspondence between mmc versions as used in u-boot and the version
> numbers reported in register EXT_CSD_REV is wrong for versions above and
> including MMC_VERSION_4_41. All those versions were shifted by one:
> real 4.5 hardware appeared to be MMC_VERSION_5_0.
>
> Fix this by adding the missing version in the correspondence table.
>
> Reported-by: eil Eilmsteiner Heribert <eil at keba.com>
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot at ti.com>
>
> ---
>
>  drivers/mmc/mmc.c | 1 +
>  include/mmc.h     | 1 +
>  2 files changed, 2 insertions(+)
>
> diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
> index 31614dd..99e2a75 100644
> --- a/drivers/mmc/mmc.c
> +++ b/drivers/mmc/mmc.c
> @@ -1950,6 +1950,7 @@ static int mmc_startup_v4(struct mmc *mmc)
>                 MMC_VERSION_4_1,
>                 MMC_VERSION_4_2,
>                 MMC_VERSION_4_3,
> +               MMC_VERSION_4_4,
>                 MMC_VERSION_4_41,
>                 MMC_VERSION_4_5,
>                 MMC_VERSION_5_0,
> diff --git a/include/mmc.h b/include/mmc.h
> index a46eaed..86f885b 100644
> --- a/include/mmc.h
> +++ b/include/mmc.h
> @@ -54,6 +54,7 @@
>  #define MMC_VERSION_4_1                MAKE_MMC_VERSION(4, 1, 0)
>  #define MMC_VERSION_4_2                MAKE_MMC_VERSION(4, 2, 0)
>  #define MMC_VERSION_4_3                MAKE_MMC_VERSION(4, 3, 0)
> +#define MMC_VERSION_4_4                MAKE_MMC_VERSION(4, 4, 0)
>  #define MMC_VERSION_4_41       MAKE_MMC_VERSION(4, 4, 1)
>  #define MMC_VERSION_4_5                MAKE_MMC_VERSION(4, 5, 0)
>  #define MMC_VERSION_5_0                MAKE_MMC_VERSION(5, 0, 0)
> --
> 1.9.1
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> https://lists.denx.de/listinfo/u-boot

Reviewed-by: Sam Protsenko <semen.protsenko at linaro.org>

This patch fixes eMMC on AM57x EVM / X15 boards, which was broken in
58a6fb7b0496 ("mmc: reworked version lookup in mmc_startup_v4")
commit.

Thanks.