On 15/11/19 1:12 PM, haibo.chen@xxxxxxx wrote: > From: Haibo Chen <haibo.chen@xxxxxxx> > > In some low power mode, SoC will lose the pin state, so need to restore > the pin state when resume back. > > Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx> > --- > drivers/mmc/host/sdhci-esdhc-imx.c | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c > index 1c988d6a2433..25b01f059aca 100644 > --- a/drivers/mmc/host/sdhci-esdhc-imx.c > +++ b/drivers/mmc/host/sdhci-esdhc-imx.c > @@ -1623,7 +1623,11 @@ static int sdhci_esdhc_suspend(struct device *dev) > if (host->tuning_mode != SDHCI_TUNING_MODE_3) > mmc_retune_needed(host->mmc); > > - return sdhci_suspend_host(host); > + ret = sdhci_suspend_host(host); > + if (!ret) > + pinctrl_pm_select_sleep_state(dev); Error return? > + > + return ret; > } > > static int sdhci_esdhc_resume(struct device *dev) > @@ -1631,6 +1635,8 @@ static int sdhci_esdhc_resume(struct device *dev) > struct sdhci_host *host = dev_get_drvdata(dev); > int ret; > > + pinctrl_pm_select_default_state(dev); Error return? > + > /* re-initialize hw state in case it's lost in low power mode */ > sdhci_esdhc_imx_hwinit(host); > >
