On Thu, Jun 10, 2010 at 01:43:19PM -0700, akpm@xxxxxxxxxxxxxxxxxxxx wrote: > > The patch titled > SDHCI: add no hi-speed bit quirk support > has been added to the -mm tree. Its filename is > sdhci-add-no-hi-speed-bit-quirk-support.patch > > Before you just go and hit "reply", please: > a) Consider who else should be cc'ed > b) Prefer to cc a suitable mailing list as well > c) Ideally: find the original patch on the mailing list and do a > reply-to-all to that, adding suitable additional cc's > > *** Remember to use Documentation/SubmitChecklist when testing your code *** > > See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find > out what to do about this > > The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ > > ------------------------------------------------------ > Subject: SDHCI: add no hi-speed bit quirk support > From: Kyungmin Park <kmpark@xxxxxxxxxxxxx> > > Some SDHCI controllers like s5pc110 don't have an HISPD bit in the HOSTCTL > register. It would be nice for someone at Samsung to (a) explain the differences from the base SDHCI spec for all their hardware (the databooks are often vague in this area) and (b) for the information for the extra registers this IP block has to be explained in more detail (and the platform code checked for this too). The CTRL2/CTRL3 registers definitions in the datasheets leave out useful information such as how the feedback and filtering bits should be set and how they depend on things such as the card type and bus speed. > Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> > Cc: <linux-mmc@xxxxxxxxxxxxxxx> > Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > --- > > drivers/mmc/host/sdhci.c | 3 ++- > drivers/mmc/host/sdhci.h | 2 ++ > 2 files changed, 4 insertions(+), 1 deletion(-) > > diff -puN drivers/mmc/host/sdhci.c~sdhci-add-no-hi-speed-bit-quirk-support drivers/mmc/host/sdhci.c > --- a/drivers/mmc/host/sdhci.c~sdhci-add-no-hi-speed-bit-quirk-support > +++ a/drivers/mmc/host/sdhci.c > @@ -1164,7 +1164,8 @@ static void sdhci_set_ios(struct mmc_hos > else > ctrl &= ~SDHCI_CTRL_4BITBUS; > > - if (ios->timing == MMC_TIMING_SD_HS) > + if (ios->timing == MMC_TIMING_SD_HS && > + !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)) > ctrl |= SDHCI_CTRL_HISPD; > else > ctrl &= ~SDHCI_CTRL_HISPD; > diff -puN drivers/mmc/host/sdhci.h~sdhci-add-no-hi-speed-bit-quirk-support drivers/mmc/host/sdhci.h > --- a/drivers/mmc/host/sdhci.h~sdhci-add-no-hi-speed-bit-quirk-support > +++ a/drivers/mmc/host/sdhci.h > @@ -240,6 +240,8 @@ struct sdhci_host { > #define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25) > /* Controller cannot support End Attribute in NOP ADMA descriptor */ > #define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26) > +/* Controller doesn't have HISPD bit field in HI-SPEED SD card */ > +#define SDHCI_QUIRK_NO_HISPD_BIT (1<<27) > > int irq; /* Device IRQ */ > void __iomem * ioaddr; /* Mapped address */ > _ > > Patches currently in -mm which might be from kmpark@xxxxxxxxxxxxx are > > mmc-recognize-csd-structure.patch > mmc-recognize-csd-structure-fix.patch > s5pc110-sdhci-s3c-can-override-host-capabilities.patch > s5pc110-sdhci-s3c-support-on-s5pc110.patch > sdhci-add-no-hi-speed-bit-quirk-support.patch > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- -- Ben Q: What's a light-year? A: One-third less calories than a regular year. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
