----- "Marek Vasut" <marek.va...@gmail.com> wrote:
> > sdhci_readw does not work for host version read in Armada100 series
> > SoCs. This patch fix this issue by making a sdhci_readl call to get
> host
> > version.
> >
> > Signed-off-by: Ajay Bhargav <ajay.bhar...@einfochips.com>
> > ---
> > drivers/mmc/mv_sdhci.c | 6 ++++++
> > 1 files changed, 6 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c
> > index f92caeb..c7fd287 100644
> > --- a/drivers/mmc/mv_sdhci.c
> > +++ b/drivers/mmc/mv_sdhci.c
> > @@ -30,6 +30,7 @@ static inline void mv_sdhci_writeb(struct
> sdhci_host
> > *host, u8 val, int reg) #endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
> >
> > static char *MVSDH_NAME = "mv_sdh";
> > +
> > int mv_sdh_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
> > {
> > struct sdhci_host *host = NULL;
> > @@ -48,7 +49,12 @@ int mv_sdh_init(u32 regbase, u32 max_clk, u32
> min_clk,
> > u32 quirks) mv_ops.write_b = mv_sdhci_writeb;
> > host->ops = &mv_ops;
> > #endif
> > +#ifdef CONFIG_ARMADA100
> > + /* SDHCI host version read workaround for Armada100 series */
> > + host->version = sdhci_readl(host, SDHCI_HOST_VERSION - 2) >> 16;
> > +#else
> > host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
> > +#endif
> > add_sdhci(host, max_clk, min_clk);
> > return 0;
> > }
>
> Basically armada100 can't do 16bit access to that register. Ok, but
> why does it
> work for other registers? Also, can you make this a config option like
>
> CONFIG_SDHCI_REG32_QUIRK (invent some better name ;-) ).
>
> Cheers
>
Hi Marek,
Armada100 SOC has this bug for particularly that register. This is particularly
for that register so Do you think a config is required for this?
Regards,
Ajay Bhargav
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