mmc: tegra: Disable UHS-I modes for tegra114

commit 7bf037d6ac4768e228e337afd7b6c6d98f947f9f upstream.

SD card support for Tegra114 started failing after commit a8e326a911d3
("mmc: tegra: implement module external clock change") was merged. This
commit was part of a series to enable UHS-I modes for Tegra. To
workaround this problem for now, disable UHS-I modes for Tegra114 by
separating the soc data structures for Tegra114 and Tegra124 so that
UHS-I is still enabled for Tegra124 but not Tegra114.

Fixes: a8e326a911d3 ("mmc: tegra: implement module external clock change")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 83c4bf7bc16ccfa476bf3d02ca9bce9022b582b7..212d51f089397ffb39df07ba49956879f1005a4d 100644 (file)
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -147,10 +147,16 @@ static void tegra_sdhci_reset(struct sdhci_host *host, u8 mask)
        /* Advertise UHS modes as supported by host */
        if (soc_data->nvquirks & NVQUIRK_ENABLE_SDR50)
                misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_SDR50;
+       else
+               misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_SDR50;
        if (soc_data->nvquirks & NVQUIRK_ENABLE_DDR50)
                misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_DDR50;
+       else
+               misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_DDR50;
        if (soc_data->nvquirks & NVQUIRK_ENABLE_SDR104)
                misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_SDR104;
+       else
+               misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_SDR104;
        sdhci_writel(host, misc_ctrl, SDHCI_TEGRA_VENDOR_MISC_CTRL);
 
        clk_ctrl = sdhci_readl(host, SDHCI_TEGRA_VENDOR_CLOCK_CTRL);
@@ -335,6 +341,10 @@ static const struct sdhci_pltfm_data sdhci_tegra114_pdata = {
 
 static const struct sdhci_tegra_soc_data soc_data_tegra114 = {
        .pdata = &sdhci_tegra114_pdata,
+};
+
+static const struct sdhci_tegra_soc_data soc_data_tegra124 = {
+       .pdata = &sdhci_tegra114_pdata,
        .nvquirks = NVQUIRK_ENABLE_SDR50 |
                    NVQUIRK_ENABLE_DDR50 |
                    NVQUIRK_ENABLE_SDR104,
@@ -357,7 +367,7 @@ static const struct sdhci_tegra_soc_data soc_data_tegra210 = {
 
 static const struct of_device_id sdhci_tegra_dt_match[] = {
        { .compatible = "nvidia,tegra210-sdhci", .data = &soc_data_tegra210 },
-       { .compatible = "nvidia,tegra124-sdhci", .data = &soc_data_tegra114 },
+       { .compatible = "nvidia,tegra124-sdhci", .data = &soc_data_tegra124 },
        { .compatible = "nvidia,tegra114-sdhci", .data = &soc_data_tegra114 },
        { .compatible = "nvidia,tegra30-sdhci", .data = &soc_data_tegra30 },
        { .compatible = "nvidia,tegra20-sdhci", .data = &soc_data_tegra20 },