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SubjectRe: [PATCH] mmc: sdhci-pci-gli: Fix can not access GL9750 after reboot from Windows 10
Tested-by: Grzegorz Kowal <custos.mentis@gmail.com>

Thanks,
Grzegorz

On Mon, May 4, 2020 at 4:26 AM Adrian Hunter <adrian.hunter@intel.com> wrote:
>
> On 4/05/20 9:39 am, Ben Chuang wrote:
> > From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
> >
> > Need to clear some bits in a vendor-defined register after reboot from
> > Windows 10.
> >
> > Fixes: e51df6ce668a ("mmc: host: sdhci-pci: Add Genesys Logic GL975x support")
> > Reported-by: Grzegorz Kowal <custos.mentis@gmail.com>
> > Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
>
> Acked-by: Adrian Hunter <adrian.hunter@intel.com>
>
> > ---
> > drivers/mmc/host/sdhci-pci-gli.c | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
> > index ce15a05f23d4..8170b659f2af 100644
> > --- a/drivers/mmc/host/sdhci-pci-gli.c
> > +++ b/drivers/mmc/host/sdhci-pci-gli.c
> > @@ -26,6 +26,9 @@
> > #define SDHCI_GLI_9750_DRIVING_2 GENMASK(27, 26)
> > #define GLI_9750_DRIVING_1_VALUE 0xFFF
> > #define GLI_9750_DRIVING_2_VALUE 0x3
> > +#define SDHCI_GLI_9750_SEL_1 BIT(29)
> > +#define SDHCI_GLI_9750_SEL_2 BIT(31)
> > +#define SDHCI_GLI_9750_ALL_RST (BIT(24)|BIT(25)|BIT(28)|BIT(30))
> >
> > #define SDHCI_GLI_9750_PLL 0x864
> > #define SDHCI_GLI_9750_PLL_TX2_INV BIT(23)
> > @@ -122,6 +125,8 @@ static void gli_set_9750(struct sdhci_host *host)
> > GLI_9750_DRIVING_1_VALUE);
> > driving_value |= FIELD_PREP(SDHCI_GLI_9750_DRIVING_2,
> > GLI_9750_DRIVING_2_VALUE);
> > + driving_value &= ~(SDHCI_GLI_9750_SEL_1|SDHCI_GLI_9750_SEL_2|SDHCI_GLI_9750_ALL_RST);
> > + driving_value |= SDHCI_GLI_9750_SEL_2;
> > sdhci_writel(host, driving_value, SDHCI_GLI_9750_DRIVING);
> >
> > sw_ctrl_value &= ~SDHCI_GLI_9750_SW_CTRL_4;
> >
>

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