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| author |   Aapo Vienamo <avienamo@nvidia.com> | 2018-08-30 18:06:23 +0300 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-08 11:40:43 +0200 |
| commit | 41a0b8d748f917984e02c6a9dde7bdbad5fff036 (patch) | |
| tree | 29ab3e3cf69037aacf862a440dd21ddba9314964 /drivers/mmc/host/sdhci-tegra.c | |
| parent | mmc: tegra: Configure default tap values (diff) | |
| download | wireguard-linux-41a0b8d748f917984e02c6a9dde7bdbad5fff036.tar.xz wireguard-linux-41a0b8d748f917984e02c6a9dde7bdbad5fff036.zip | |
mmc: tegra: Configure default trim value on reset
Program the outbound sampling trim value in tegra_sdhci_reset(). Unlike
the outbound tap value this does not depend on the signaling mode and
needs to be only programmed once.
Signed-off-by: Aapo Vienamo <avienamo@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci-tegra.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-tegra.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 3fd54af05671..704c82cf7adf 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -37,6 +37,8 @@ #define SDHCI_TEGRA_VENDOR_CLOCK_CTRL 0x100 #define SDHCI_CLOCK_CTRL_TAP_MASK 0x00ff0000 #define SDHCI_CLOCK_CTRL_TAP_SHIFT 16 +#define SDHCI_CLOCK_CTRL_TRIM_MASK 0x1f000000 +#define SDHCI_CLOCK_CTRL_TRIM_SHIFT 24 #define SDHCI_CLOCK_CTRL_SDR50_TUNING_OVERRIDE BIT(5) #define SDHCI_CLOCK_CTRL_PADPIPE_CLKEN_OVERRIDE BIT(3) #define SDHCI_CLOCK_CTRL_SPI_MODE_CLKEN_OVERRIDE BIT(2) @@ -287,7 +289,8 @@ static void tegra_sdhci_reset(struct sdhci_host *host, u8 mask) SDHCI_MISC_CTRL_ENABLE_DDR50 | SDHCI_MISC_CTRL_ENABLE_SDR104); - clk_ctrl &= ~SDHCI_CLOCK_CTRL_SPI_MODE_CLKEN_OVERRIDE; + clk_ctrl &= ~(SDHCI_CLOCK_CTRL_TRIM_MASK | + SDHCI_CLOCK_CTRL_SPI_MODE_CLKEN_OVERRIDE); if (tegra_sdhci_is_pad_and_regulator_valid(host)) { /* Erratum: Enable SDHCI spec v3.00 support */ @@ -304,6 +307,8 @@ static void tegra_sdhci_reset(struct sdhci_host *host, u8 mask) clk_ctrl |= SDHCI_CLOCK_CTRL_SDR50_TUNING_OVERRIDE; } + clk_ctrl |= tegra_host->default_trim << SDHCI_CLOCK_CTRL_TRIM_SHIFT; + sdhci_writel(host, misc_ctrl, SDHCI_TEGRA_VENDOR_MISC_CTRL); sdhci_writel(host, clk_ctrl, SDHCI_TEGRA_VENDOR_CLOCK_CTRL); |