diff options
| author | Aapo Vienamo <avienamo@nvidia.com> | 2018-08-30 18:06:21 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-08 12:40:43 +0300 |
| commit | 85c0da1751fc1fab6f6cbf5414698a3c68d8330b (patch) | |
| tree | 0c3e30d0677cd4b289d625827f6218ce2d26d797 /drivers/mmc/host/sdhci-tegra.c | |
| parent | d4501d8e884970dbe9ff1b48cf9424c97ede4cc7 (diff) | |
| download | linux-85c0da1751fc1fab6f6cbf5414698a3c68d8330b.tar.xz | |
mmc: tegra: Parse default trim and tap from dt
Parse the default inbound and outbound sampling trimmer values from
the device tree.
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 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index d0a536f1b994..dd8cb3f3cecc 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -107,6 +107,9 @@ struct sdhci_tegra { struct pinctrl_state *pinctrl_state_1v8; struct sdhci_tegra_autocal_offsets autocal_offsets; + + u32 default_tap; + u32 default_trim; }; static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg) @@ -461,6 +464,23 @@ static void tegra_sdhci_parse_pad_autocal_dt(struct sdhci_host *host) autocal->pull_down_hs400 = autocal->pull_down_1v8; } +static void tegra_sdhci_parse_default_tap_and_trim(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host); + int err; + + err = device_property_read_u32(host->mmc->parent, "nvidia,default-tap", + &tegra_host->default_tap); + if (err) + tegra_host->default_tap = 0; + + err = device_property_read_u32(host->mmc->parent, "nvidia,default-trim", + &tegra_host->default_trim); + if (err) + tegra_host->default_trim = 0; +} + static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); @@ -881,6 +901,8 @@ static int sdhci_tegra_probe(struct platform_device *pdev) tegra_sdhci_parse_pad_autocal_dt(host); + tegra_sdhci_parse_default_tap_and_trim(host); + tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power", GPIOD_OUT_HIGH); if (IS_ERR(tegra_host->power_gpio)) { |