Enable SDCard support

Enable mmc2 node in the device tree.

Tested: Mount/Unmount SDCard
Change-Id: If5d7edfbf5ce7d3c121cd88a99012ca551442dfe
diff --git a/arch/arm64/boot/dts/mediatek/mt8167-coral.dts b/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
index 32fd33dd..3b9b243 100644
--- a/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
@@ -231,6 +231,44 @@
 		};
 	};
 
+	mmc2_pins_default: mmc2default {
+		pins_cmd_dat {
+			pinmux = <MT8167_PIN_70_MSDC2_DAT0__FUNC_MSDC2_DAT0>,
+				<MT8167_PIN_71_MSDC2_DAT1__FUNC_MSDC2_DAT1>,
+				<MT8167_PIN_72_MSDC2_DAT2__FUNC_MSDC2_DAT2>,
+				<MT8167_PIN_73_MSDC2_DAT3__FUNC_MSDC2_DAT3>,
+				<MT8167_PIN_68_MSDC2_CMD__FUNC_MSDC2_CMD>;
+			input-enable;
+			drive-strength = <MTK_DRIVE_6mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+
+		pins_clk {
+			pinmux = <MT8167_PIN_69_MSDC2_CLK__FUNC_MSDC2_CLK>;
+			drive-strength = <MTK_DRIVE_6mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+	};
+
+	mmc2_pins_uhs: mmc2@0 {
+		pins_cmd_dat {
+			pinmux = <MT8167_PIN_70_MSDC2_DAT0__FUNC_MSDC2_DAT0>,
+				<MT8167_PIN_71_MSDC2_DAT1__FUNC_MSDC2_DAT1>,
+				<MT8167_PIN_72_MSDC2_DAT2__FUNC_MSDC2_DAT2>,
+				<MT8167_PIN_73_MSDC2_DAT3__FUNC_MSDC2_DAT3>,
+				<MT8167_PIN_68_MSDC2_CMD__FUNC_MSDC2_CMD>;
+			input-enable;
+			drive-strength = <MTK_DRIVE_6mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+
+		pins_clk {
+			pinmux = <MT8167_PIN_69_MSDC2_CLK__FUNC_MSDC2_CLK>;
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+	};
+
 	hdmi_pins_default: hdmi_pins_default {
 	};
 
@@ -313,6 +351,21 @@
 	};
 };
 
+&mmc2 {
+	pinctrl-names = "default", "state_uhs";
+	pinctrl-0 = <&mmc2_pins_default>;
+	pinctrl-1 = <&mmc2_pins_uhs>;
+	status = "okay";
+	bus-width = <4>;
+	max-frequency = <200000000>;
+	cap-sd-highspeed;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	broken-cd;
+	vmmc-supply = <&mt6392_vmch_reg>;
+	vqmmc-supply = <&mt6392_vmc_reg>;
+};
+
 &dpi1 {
 	status = "okay";
 	ddc-i2c-bus = <&hdmiddc>;