Re: [PATCH] mmc: renesas_sdhi: Fix HS400 on R-Car M3-W+

From: Niklas Söderlund
Date: Fri Jun 04 2021 - 12:14:20 EST


Hi Geert,

Thanks for your work.

On 2021-06-04 14:59:43 +0200, Geert Uytterhoeven wrote:
> R-Car M3-W ES3.0 is marketed as R-Car M3-W+ (R8A77961), and has its own
> compatible value "renesas,r8a77961".
>
> Hence using soc_device_match() with soc_id = "r8a7796" and revision =
> "ES3.*" does not actually match running on an R-Car M3-W+ SoC.
>
> Fix this by matching with soc_id = "r8a77961" instead.
>
> Fixes: a38c078fea0b1393 ("mmc: renesas_sdhi: Avoid bad TAP in HS400")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>

> ---
> Boot-tested on Salvator-XS with R-Car M3-W+ ES3.0.
> No difference seen in eMMC/SHHC detection:
>
> mmc0: new HS400 MMC card at address 0001
> mmcblk0: mmc0:0001 BGSD4R 29.1 GiB
> mmcblk0boot0: mmc0:0001 BGSD4R 31.9 MiB
> mmcblk0boot1: mmc0:0001 BGSD4R 31.9 MiB
> mmcblk0rpmb: mmc0:0001 BGSD4R 4.00 MiB, chardev (247:0)
> mmcblk0: p1
> mmc1: new ultra high speed SDR104 SDHC card at address aaaa
> mmcblk1: mmc1:aaaa SL16G 14.8 GiB
> mmcblk1: p1
> mmc2: new ultra high speed SDR104 SDHC card at address aaaa
> mmcblk2: mmc2:aaaa SL32G 29.7 GiB
> mmcblk2: p1
> ---
> drivers/mmc/host/renesas_sdhi_core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
> index 635bf31a67359f10..b719eda6b8619453 100644
> --- a/drivers/mmc/host/renesas_sdhi_core.c
> +++ b/drivers/mmc/host/renesas_sdhi_core.c
> @@ -939,7 +939,7 @@ static const struct soc_device_attribute sdhi_quirks_match[] = {
> { .soc_id = "r8a7795", .revision = "ES3.*", .data = &sdhi_quirks_bad_taps2367 },
> { .soc_id = "r8a7796", .revision = "ES1.[012]", .data = &sdhi_quirks_4tap_nohs400 },
> { .soc_id = "r8a7796", .revision = "ES1.*", .data = &sdhi_quirks_r8a7796_es13 },
> - { .soc_id = "r8a7796", .revision = "ES3.*", .data = &sdhi_quirks_bad_taps1357 },
> + { .soc_id = "r8a77961", .data = &sdhi_quirks_bad_taps1357 },
> { .soc_id = "r8a77965", .data = &sdhi_quirks_r8a77965 },
> { .soc_id = "r8a77980", .data = &sdhi_quirks_nohs400 },
> { .soc_id = "r8a77990", .data = &sdhi_quirks_r8a77990 },
> --
> 2.25.1
>

--
Regards,
Niklas Söderlund