devicetree: Add TI-NSPIRE USB OTG support to device tree

Signed-off-by: Daniel Tang <dt.tangr@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/nspire-classic.dtsi

@@ -51,6 +51,11 @@ &ahb_clk {
 	compatible = "lsi,nspire-classic-ahb-divider";
 };
 
+
+&vbus_reg {
+	gpio = <&gpio 5 0>;
+};
+
 / {
 	memory {
 		device_type = "memory";

arch/arm/boot/dts/nspire-cx.dts

@@ -69,6 +69,10 @@ &keypad {
 	0x0709001d 	0x070a0033 	>;
 };
 
+&vbus_reg {
+	gpio = <&gpio 2 0>;
+};
+
 / {
 	model = "TI-NSPIRE CX";
 	compatible = "ti,nspire-cx";

arch/arm/boot/dts/nspire.dtsi

@@ -54,6 +54,20 @@ apb_pclk: apb_pclk {
 		clocks = <&ahb_clk>;
 	};
 
+	usb_phy: usb_phy {
+		compatible = "usb-nop-xceiv";
+	};
+
+	vbus_reg: vbus_reg {
+		compatible = "regulator-fixed";
+
+		regulator-name = "USB VBUS output";
+		regulator-type = "voltage";
+
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -65,8 +79,12 @@ spi: spi@A9000000 {
 		};
 
 		usb0: usb@B0000000 {
+			compatible = "lsi,zevio-usb";
 			reg = <0xB0000000 0x1000>;
 			interrupts = <8>;
+
+			usb-phy = <&usb_phy>;
+			vbus-supply = <&vbus_reg>;
 		};
 
 		usb1: usb@B4000000 {
@@ -105,8 +123,11 @@ apb@90000000 {
 			ranges;
 
 			gpio: gpio@90000000 {
+				compatible = "lsi,zevio-gpio";
 				reg = <0x90000000 0x1000>;
 				interrupts = <7>;
+				gpio-controller;
+				#gpio-cells = <2>;
 			};
 
 			fast_timer: timer@90010000 {