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

[Geert Uytterhoeven]

Hi Wolfram,

On Fri, Jun 4, 2021 at 3:16 PM Wolfram Sang
<wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Fri, Jun 04, 2021 at 02:59:43PM +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>
>
> Great, thanks for this fix!
>
> > Boot-tested on Salvator-XS with R-Car M3-W+ ES3.0.
> > No difference seen in eMMC/SHHC detection:
>
> You'd need some stress testing plus debug output of the TAPs chosen to
> actually see a difference. However, the patch is obviously correct.
> Testing if soc_id actually matches now is good enough.

FTR, I did check that part.

> Reviewed-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

Thanks!

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds