On 21 May 2015 at 10:43, Suman Tripathi <stripathi@xxxxxxx> 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@xxxxxxx> > --- > --- > 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
