ARM: dts: iwg22d: Enable SDHI0 controller

Enable the SDHI0 controller on iWave RZ/G1E carrier board.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts

@@ -24,6 +24,19 @@ chosen {
 		bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";
 		stdout-path = "serial0:115200n8";
 	};
+
+	vccq_sdhi0: regulator-vccq-sdhi0 {
+		compatible = "regulator-gpio";
+
+		regulator-name = "SDHI0 VccQ";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
+		gpios-states = <1>;
+		states = <3300000 1
+			  1800000 0>;
+	};
 };
 
 &pfc {
@@ -36,6 +49,12 @@ avb_pins: avb {
 		groups = "avb_mdio", "avb_gmii";
 		function = "avb";
 	};
+
+	sdhi0_pins: sd0 {
+		groups = "sdhi0_data4", "sdhi0_ctrl";
+		function = "sdhi0";
+		power-source = <3300>;
+	};
 };
 
 &scif4 {
@@ -63,3 +82,13 @@ phy3: ethernet-phy@3 {
 		micrel,led-mode = <1>;
 	};
 };
+
+&sdhi0 {
+	pinctrl-0 = <&sdhi0_pins>;
+	pinctrl-names = "default";
+
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&vccq_sdhi0>;
+	cd-gpios = <&gpio6 6 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};