On Fri, Jul 22, 2011 at 7:30 AM, Kishore Kadiyala <kishorek.kadiyala@xxxxxxxxx> wrote: > > On Fri, Jul 22, 2011 at 12:59 AM, Bryan Buckley <bryan.buckley@xxxxxx> wrote: > > Remove OMAP4_USBC1_ICUSB_PWRDNZ_MASK during enable/disable PWRDNZ mode for > > MMC1_PBIAS and associated extended-drain MMC1 I/O cell. This is in accordance > > with the control module programming guide. This fixes a bug where if trying to > > use gpio_98 or gpio_99 and MMC1 at the same time the GPIO signal will be > > affected by a changing SDMMC1_VDDS. > > > > Software must keep MMC1_PBIAS cell and MMC1_IO cell PWRDNZ signals low whenever > > SDMMC1_VDDS ramps up/down or changes for cell protection purposes. > > > > MMC1 is based on SDMMC1_VDDS whereas USBC1 is based on SIM_VDDS therefore > > they can operate independently. > > > > Signed-off-by: Bryan Buckley <bryan.buckley@xxxxxx> > > Good catch, > > Acked-by: Kishore Kadiyala <kishore.kadiyala@xxxxxx> > Any other comments from anyone else? Noticed that this commit isn't in any upstream branches. This patch will fix issues with people who want to use GPIO 98/99 AND MMC1 at the same time. Would be good to have this fix upstream. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
