mmc: tegra: enable UHS-I modes

Keep the quirk bits, as Tegra30 and Tegra114 host have different levels
of support for UHS-I modes and so need different spare bits to be set,
but change the logic to be positive.

Tegra210 needs a different tuning sequence than Tegra30+. Disable
UHS modes until support for this is properly added.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 17 insertions, 20 deletions

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 020154943732..ff2eefe9f237 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -45,9 +45,9 @@
 #define NVQUIRK_FORCE_SDHCI_SPEC_200    BIT(0)
 #define NVQUIRK_ENABLE_BLOCK_GAP_DET    BIT(1)
 #define NVQUIRK_ENABLE_SDHCI_SPEC_300   BIT(2)
-#define NVQUIRK_DISABLE_SDR50           BIT(3)
-#define NVQUIRK_DISABLE_SDR104          BIT(4)
-#define NVQUIRK_DISABLE_DDR50           BIT(5)
+#define NVQUIRK_ENABLE_SDR50            BIT(3)
+#define NVQUIRK_ENABLE_SDR104           BIT(4)
+#define NVQUIRK_ENABLE_DDR50            BIT(5)
 
 struct sdhci_tegra_soc_data {
         const struct sdhci_pltfm_data *pdata;
@@ -144,18 +144,18 @@ static void tegra_sdhci_reset(struct sdhci_host *host, u8 mask)
         /* Erratum: Enable SDHCI spec v3.00 support */
         if (soc_data->nvquirks & NVQUIRK_ENABLE_SDHCI_SPEC_300)
                 misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_SDHCI_SPEC_300;
-        /* Don't advertise UHS modes which aren't supported yet */
-        if (soc_data->nvquirks & NVQUIRK_DISABLE_SDR50)
-                misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_SDR50;
-        if (soc_data->nvquirks & NVQUIRK_DISABLE_DDR50)
-                misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_DDR50;
-        if (soc_data->nvquirks & NVQUIRK_DISABLE_SDR104)
-                misc_ctrl &= ~SDHCI_MISC_CTRL_ENABLE_SDR104;
+        /* Advertise UHS modes as supported by host */
+        if (soc_data->nvquirks & NVQUIRK_ENABLE_SDR50)
+                misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_SDR50;
+        if (soc_data->nvquirks & NVQUIRK_ENABLE_DDR50)
+                misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_DDR50;
+        if (soc_data->nvquirks & NVQUIRK_ENABLE_SDR104)
+                misc_ctrl |= SDHCI_MISC_CTRL_ENABLE_SDR104;
         sdhci_writew(host, misc_ctrl, SDHCI_TEGRA_VENDOR_MISC_CTRL);
 
         clk_ctrl = sdhci_readl(host, SDHCI_TEGRA_VENDOR_CLOCK_CTRL);
         clk_ctrl &= ~SDHCI_CLOCK_CTRL_SPI_MODE_CLKEN_OVERRIDE;
-        if (!(soc_data->nvquirks & NVQUIRK_DISABLE_SDR50))
+        if (soc_data->nvquirks & SDHCI_MISC_CTRL_ENABLE_SDR50)
                 clk_ctrl |= SDHCI_CLOCK_CTRL_SDR50_TUNING_OVERRIDE;
         sdhci_writel(host, clk_ctrl, SDHCI_TEGRA_VENDOR_CLOCK_CTRL);
 
@@ -305,8 +305,8 @@ static const struct sdhci_pltfm_data sdhci_tegra30_pdata = {
 static const struct sdhci_tegra_soc_data soc_data_tegra30 = {
         .pdata = &sdhci_tegra30_pdata,
         .nvquirks = NVQUIRK_ENABLE_SDHCI_SPEC_300 |
-                    NVQUIRK_DISABLE_SDR50 |
-                    NVQUIRK_DISABLE_SDR104,
+                    NVQUIRK_ENABLE_SDR50 |
+                    NVQUIRK_ENABLE_SDR104,
 };
 
 static const struct sdhci_ops tegra114_sdhci_ops = {
@@ -335,9 +335,9 @@ static const struct sdhci_pltfm_data sdhci_tegra114_pdata = {
 
 static const struct sdhci_tegra_soc_data soc_data_tegra114 = {
         .pdata = &sdhci_tegra114_pdata,
-        .nvquirks = NVQUIRK_DISABLE_SDR50 |
-                    NVQUIRK_DISABLE_DDR50 |
-                    NVQUIRK_DISABLE_SDR104,
+        .nvquirks = NVQUIRK_ENABLE_SDR50 |
+                    NVQUIRK_ENABLE_DDR50 |
+                    NVQUIRK_ENABLE_SDR104,
 };
 
 static const struct sdhci_pltfm_data sdhci_tegra210_pdata = {
@@ -353,9 +353,6 @@ static const struct sdhci_pltfm_data sdhci_tegra210_pdata = {
 
 static const struct sdhci_tegra_soc_data soc_data_tegra210 = {
         .pdata = &sdhci_tegra210_pdata,
-        .nvquirks = NVQUIRK_DISABLE_SDR50 |
-                    NVQUIRK_DISABLE_DDR50 |
-                    NVQUIRK_DISABLE_SDR104,
 };
 
 static const struct of_device_id sdhci_tegra_dt_match[] = {
@@ -402,7 +399,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
         if (rc)
                 goto err_parse_dt;
 
-        if (!(tegra_host->soc_data->nvquirks & NVQUIRK_DISABLE_DDR50))
+        if (tegra_host->soc_data->nvquirks & NVQUIRK_ENABLE_DDR50)
                 host->mmc->caps |= MMC_CAP_1_8V_DDR;
 
         tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power",