ARM: tegra: beaver: Allow SD card voltage to be changed

This allows to switch the card signal voltage level to 1.8 V, which is
needed for any ultra high speed modes to work.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

diff --git a/arch/arm/boot/dts/tegra30-beaver.dts b/arch/arm/boot/dts/tegra30-beaver.dts
index 1eca3b2..b6da15d 100644 (file)
--- a/arch/arm/boot/dts/tegra30-beaver.dts
+++ b/arch/arm/boot/dts/tegra30-beaver.dts
@@ -1843,7 +1843,7 @@
 
                                ldo5_reg: ldo5 {
                                        regulator-name = "vddio_sdmmc,avdd_vdac";
-                                       regulator-min-microvolt = <3300000>;
+                                       regulator-min-microvolt = <1800000>;
                                        regulator-max-microvolt = <3300000>;
                                        regulator-always-on;
                                };
@@ -1914,6 +1914,7 @@
 
        sdhci@78000000 {
                status = "okay";
+               vqmmc-supply = <&ldo5_reg>;
                cd-gpios = <&gpio TEGRA_GPIO(I, 5) GPIO_ACTIVE_LOW>;
                wp-gpios = <&gpio TEGRA_GPIO(T, 3) GPIO_ACTIVE_HIGH>;
                power-gpios = <&gpio TEGRA_GPIO(D, 7) GPIO_ACTIVE_HIGH>;