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mmc: sdhci-esdhc-imx: restore pin state when resume back

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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@nxp.com>
Link: https://lore.kernel.org/r/1582100757-20683-8-git-send-email-haibo.chen@nxp.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Haibo Chen 2020-02-19 16:25:56 +08:00 committed by Ulf Hansson
parent e534b82f24
commit af8fade4bd
1 changed files with 9 additions and 1 deletions
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10
drivers/mmc/host/sdhci-esdhc-imx.c
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@ -1731,7 +1731,11 @@ 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)
return pinctrl_pm_select_sleep_state(dev);
return ret;
}
static int sdhci_esdhc_resume(struct device *dev)
@ -1739,6 +1743,10 @@ static int sdhci_esdhc_resume(struct device *dev)
struct sdhci_host *host = dev_get_drvdata(dev);
int ret;
ret = pinctrl_pm_select_default_state(dev);
if (ret)
return ret;
/* re-initialize hw state in case it's lost in low power mode */
sdhci_esdhc_imx_hwinit(host);