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 | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 106097cbd0d4..dedc067cd0dd 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -1717,7 +1717,13 @@ 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) + if (pinctrl_pm_select_sleep_state(dev)) + dev_warn(mmc_dev(host->mmc), + "%s, failed to select sleep pin state!\n", __func__); + + return ret; } static int sdhci_esdhc_resume(struct device *dev) @@ -1725,6 +1731,10 @@ static int sdhci_esdhc_resume(struct device *dev) struct sdhci_host *host = dev_get_drvdata(dev); int ret; + if (pinctrl_pm_select_default_state(dev)) + dev_warn(mmc_dev(host->mmc), + "%s, failed to select default pin state!\n", __func__); + /* re-initialize hw state in case it's lost in low power mode */ sdhci_esdhc_imx_hwinit(host); -- 2.17.1
