arm64: dts: ti: j721e-common-proc-board: Add Support for eMMC and SD card

sdhci0 is connected to an eMMC and sdhci1 is connected to an SD card
slot. Add support for these nodes. Also add a gpio-regulator which is used
to power cycle the SD card.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts

@@ -122,6 +122,17 @@
 			};
 		};
 	};
+
+	vdd_mmc1: fixedregulator-sd {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_mmc1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		enable-active-high;
+		vin-supply = <&vsys_3v3>;
+		gpio = <&exp2 2 GPIO_ACTIVE_HIGH>;
+	};
 };
 
 &wkup_pmx0 {
@@ -292,6 +303,20 @@
 			J721E_IOPAD(0x214, PIN_OUTPUT, 4) /* (V4) MCAN1_TX.USB1_DRVVBUS */
 		>;
 	};
+
+	main_mmc1_pins_default: main_mmc1_pins_default {
+		pinctrl-single,pins = <
+			J721E_IOPAD(0x254, PIN_INPUT, 0) /* (R29) MMC1_CMD */
+			J721E_IOPAD(0x250, PIN_INPUT, 0) /* (P25) MMC1_CLK */
+			J721E_IOPAD(0x24c, PIN_INPUT, 0) /* (R24) MMC1_DAT0 */
+			J721E_IOPAD(0x248, PIN_INPUT, 0) /* (P24) MMC1_DAT1 */
+			J721E_IOPAD(0x244, PIN_INPUT, 0) /* (R25) MMC1_DAT2 */
+			J721E_IOPAD(0x240, PIN_INPUT, 0) /* (R26) MMC1_DAT3 */
+			J721E_IOPAD(0x258, PIN_INPUT, 0) /* (P23) MMC1_SDCD */
+			J721E_IOPAD(0x25c, PIN_INPUT, 0) /* (R28) MMC1_SDWP */
+			J721E_IOPAD(0x2ac, PIN_INPUT, 0)
+		>;
+	};
 };
 
 &main_i2c0 {
@@ -515,3 +540,23 @@
 	dr_mode = "host";
 	maximum-speed = "high-speed";
 };
+
+&main_sdhci0 {
+	/* eMMC */
+	non-removable;
+	ti,driver-strength-ohm = <50>;
+	mmc-hs400-1_8v;
+};
+
+&main_sdhci1 {
+	/* SD/MMC */
+	vmmc-supply = <&vdd_mmc1>;
+	vqmmc-supply = <&ldo1_reg>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_mmc1_pins_default>;
+};
+
+&main_sdhci2 {
+	/* Unused */
+	status = "disabled";
+};