ARM: dts: exynos: Add external SD card support for Trats board

Enable support for SDHCI controller number 2 and add required regulator
for external SD card.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

diff --git a/arch/arm/boot/dts/exynos4210-trats.dts b/arch/arm/boot/dts/exynos4210-trats.dts
index 6f1d76c..f9bbc63 100644 (file)
--- a/arch/arm/boot/dts/exynos4210-trats.dts
+++ b/arch/arm/boot/dts/exynos4210-trats.dts
@@ -385,6 +385,12 @@
                             regulator-max-microvolt = <1800000>;
                        };
 
+                       tflash_reg: LDO17 {
+                            regulator-name = "VTF_2.8V";
+                            regulator-min-microvolt = <2800000>;
+                            regulator-max-microvolt = <2800000>;
+                       };
+
                        vddq_reg: LDO21 {
                             regulator-name = "VDDQ_M1M2_1.2V";
                             regulator-min-microvolt = <1200000>;
@@ -452,6 +458,15 @@
        status = "okay";
 };
 
+&sdhci_2 {
+       bus-width = <4>;
+       pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_bus4>;
+       pinctrl-names = "default";
+       vmmc-supply = <&tflash_reg>;
+       cd-gpios = <&gpx3 4 GPIO_ACTIVE_LOW>;
+       status = "okay";
+};
+
 &serial_0 {
        status = "okay";
 };