On Fri, Aug 12, 2011 at 8:43 PM, Buckley, Bryan <bryan.buckley@xxxxxx> wrote: > 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. > FWIW: Tested on OMAP4 Blaze Tested-by: Balaji T K <balajitk@xxxxxx> -- 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
