arm64: dts: renesas: hihope-common: Add WLAN support

This patch enables WLAN support for the HiHope RZ/G2[MN] boards.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/hihope-common.dtsi

@@ -54,6 +54,13 @@ led2 {
 		led3 {
 			gpios = <&gpio0  0 GPIO_ACTIVE_HIGH>;
 		};
+
+		wlan_active_led {
+			label = "yellow:wlan";
+			gpios = <&gpio7  1 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "phy0tx";
+			default-state = "off";
+		};
 	};
 
 	reg_1p8v: regulator0 {
@@ -98,6 +105,17 @@ vccq_sdhi0: regulator-vccq-sdhi0 {
 			  1800000 0>;
 	};
 
+	wlan_en_reg: regulator-wlan_en {
+		compatible = "regulator-fixed";
+		regulator-name = "wlan-en-regulator";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		startup-delay-us = <70000>;
+
+		gpio = <&gpio_expander 1 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	x302_clk: x302-clock {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -242,6 +260,12 @@ sdhi0_pins_uhs: sd0_uhs {
 		power-source = <1800>;
 	};
 
+	sdhi2_pins: sd2 {
+		groups = "sdhi2_data4", "sdhi2_ctrl";
+		function = "sdhi2";
+		power-source = <1800>;
+	};
+
 	sdhi3_pins: sd3 {
 		groups = "sdhi3_data8", "sdhi3_ctrl", "sdhi3_ds";
 		function = "sdhi3";
@@ -301,6 +325,27 @@ &sdhi0 {
 	status = "okay";
 };
 
+&sdhi2 {
+	status = "okay";
+	pinctrl-0 = <&sdhi2_pins>;
+	pinctrl-names = "default";
+
+	vmmc-supply = <&wlan_en_reg>;
+	bus-width = <4>;
+	non-removable;
+	cap-power-off-card;
+	keep-power-in-suspend;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	wlcore: wlcore@2 {
+		compatible = "ti,wl1837";
+		reg = <2>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
+	};
+};
+
 &sdhi3 {
 	pinctrl-0 = <&sdhi3_pins>;
 	pinctrl-1 = <&sdhi3_pins>;