[PATCH RESEND v7 2/2] mmc: host: sdhci: Add support to disable SDR104/SDR50/DDR50 based on capability register 0.

[Suman Tripathi]

On Tue, May 26, 2015 at 6:06 PM, Ulf Hansson <ulf.hansson at linaro.org> wrote:

> On 21 May 2015 at 10:43, Suman Tripathi <stripathi at apm.com> wrote:
> > The sdhci framework disables SDR104/SDR50/DDR50 based on only quirk.
> > This patch adds the support to disable SDR104/SDR50/DDR50 based on
> > reading the capability register 0.
> >
> > Signed-off-by: Suman Tripathi <stripathi at apm.com>
> > ---
> > ---
> >  drivers/mmc/host/sdhci.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> > index 58c1770..a3d9b8a 100644
> > --- a/drivers/mmc/host/sdhci.c
> > +++ b/drivers/mmc/host/sdhci.c
> > @@ -3118,7 +3118,8 @@ int sdhci_add_host(struct sdhci_host *host)
> >                 }
> >         }
> >
> > -       if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V)
> > +       if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V ||
> > +           !(caps[0] & SDHCI_CAN_VDD_180))
> >                 caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
> >                        SDHCI_SUPPORT_DDR50);
> >
> > --
> > 1.8.2.1
> >
>
> I have no problem with this patch, except that it would be nice to get
> a few "tested by" to make sure it doesn't break UHS support for some
> SoCs.
>
> Kind regards
> Uffe
>

Can anyone test this in some other SoC ? Appreciate your help ..


-- 
Thanks,
with regards,
Suman Tripathi
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