diff options
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index fcab1bc4e8e9..9ad633bf1de3 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -968,6 +968,30 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask) sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); } +static void esdhc_hw_reset(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host); + u16 ctrl; + + sdhci_reset(host, SDHCI_RESET_ALL); + + /* Rest the tuning circurt */ + if (esdhc_is_usdhc(imx_data)) { + if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) { + ctrl = readl(host->ioaddr + ESDHC_MIX_CTRL); + ctrl &= ~ESDHC_MIX_CTRL_SMPCLK_SEL; + ctrl &= ~ESDHC_MIX_CTRL_FBCLK_SEL; + writel(ctrl, host->ioaddr + ESDHC_MIX_CTRL); + writel(0 << 8, host->ioaddr + ESDHC_TUNE_CTRL_STATUS); + } else if (imx_data->socdata->flags & ESDHC_FLAG_STD_TUNING) { + ctrl = readl(host->ioaddr + SDHCI_ACMD12_ERR); + ctrl &= ~ESDHC_MIX_CTRL_SMPCLK_SEL; + writel(ctrl, host->ioaddr + SDHCI_ACMD12_ERR); + } + } +} + static unsigned int esdhc_get_max_timeout_count(struct sdhci_host *host) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); @@ -1004,6 +1028,7 @@ static struct sdhci_ops sdhci_esdhc_ops = { .set_bus_width = esdhc_pltfm_set_bus_width, .set_uhs_signaling = esdhc_set_uhs_signaling, .reset = esdhc_reset, + .hw_reset = esdhc_hw_reset, }; static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { @@ -1279,7 +1304,8 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) if (esdhc_is_usdhc(imx_data)) { host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN; - host->mmc->caps |= MMC_CAP_1_8V_DDR; + host->mmc->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_HW_RESET; + if (!(imx_data->socdata->flags & ESDHC_FLAG_HS200)) host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200; |