diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index f94c1efff830..91c6a6864e15 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -39,6 +39,7 @@ #define ESDHC_VENDOR_SPEC_VSELECT (1 << 1) #define ESDHC_VENDOR_SPEC_FRC_SDCLK_ON (1 << 8) #define ESDHC_WTMK_LVL 0x44 +#define ESDHC_WTMK_DEFAULT_VAL 0x10401040 #define ESDHC_MIX_CTRL 0x48 #define ESDHC_MIX_CTRL_DDREN (1 << 3) #define ESDHC_MIX_CTRL_AC23EN (1 << 7) @@ -1157,7 +1158,7 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) * to something insane. Change it back here. */ if (esdhc_is_usdhc(imx_data)) { - writel(0x10401040, host->ioaddr + ESDHC_WTMK_LVL); + writel(ESDHC_WTMK_DEFAULT_VAL, host->ioaddr + ESDHC_WTMK_LVL); host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN; host->mmc->caps |= MMC_CAP_1_8V_DDR; @@ -1261,6 +1262,14 @@ static int sdhci_esdhc_suspend(struct device *dev) static int sdhci_esdhc_resume(struct device *dev) { + struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host); + + /* restore watermark setting in case it's lost in low power mode */ + if (esdhc_is_usdhc(imx_data)) + writel(ESDHC_WTMK_DEFAULT_VAL, host->ioaddr + ESDHC_WTMK_LVL); + return sdhci_pltfm_resume(dev); } |