Bartiomiej, On Thu, Oct 2, 2014 at 9:10 AM, Bartlomiej Zolnierkiewicz <[email protected]> wrote: > Regulators for MMC2 (SD card) are PVDD_TFLASH_2V8 (LDO19) for vmmc > and PVDD_APIO_MMCOFF_2V8 (LDO13) for vqmmc. Currently the device > tree entry for MMC2 uses PVDD_PRE_1V8 (LDO10) for vmmc and vqmmc is > not specified. Fix it. > > Without this patch: > - "mmc: dw_mmc: use mmc_regulator_get_supply to handle regulators" > patch causes a SD card detection to fail > - "mmc: dw_mmc: Support voltage changes" patch causes a boot hang > > This patch fixes both above problems. > > Suggested-by: Doug Anderson <[email protected]> > Cc: Yuvaraj Kumar C D <[email protected]> > Cc: Ulf Hansson <[email protected]> > Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]> > Acked-by: Kyungmin Park <[email protected]> > --- > arch/arm/boot/dts/exynos5420-arndale-octa.dts | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > Index: b/arch/arm/boot/dts/exynos5420-arndale-octa.dts > =================================================================== > --- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts 2014-10-02 > 15:44:53.014826886 +0200 > +++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts 2014-10-02 > 17:35:24.110600398 +0200 > @@ -74,7 +74,8 @@ > samsung,dw-mshc-ddr-timing = <1 2>; > pinctrl-names = "default"; > pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>; > - vmmc-supply = <&ldo10_reg>; > + vmmc-supply = <&ldo19_reg>; > + vqmmc-supply = <&ldo13_reg>;
This looks right to me. ...but I notice that ldo13 and ldo19 are not "always-on" in the DTS. Are you sure card detect works for you if you eject your card and try to put it back in? ...eventually the "always-on" won't be needed, but for now I think it is... -Doug -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
