ARM: dts: rockchip: add rk3288 usb PHY

This patch adds a device_node for RK3288 SoC usb phy. It also
defines the phy to be used by three usb controllers: usb_host0/1
and usb_otg.
Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Tested-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288.dtsi

@@ -419,6 +419,8 @@ usb_host0_ehci: usb@ff500000 {
 		interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_USBHOST0>;
 		clock-names = "usbhost";
+		phys = <&usbphy1>;
+		phy-names = "usb";
 		status = "disabled";
 	};
 
@@ -431,6 +433,8 @@ usb_host1: usb@ff540000 {
 		interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_USBHOST1>;
 		clock-names = "otg";
+		phys = <&usbphy2>;
+		phy-names = "usb2-phy";
 		status = "disabled";
 	};
 
@@ -441,6 +445,8 @@ usb_otg: usb@ff580000 {
 		interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru HCLK_OTG0>;
 		clock-names = "otg";
+		phys = <&usbphy0>;
+		phy-names = "usb2-phy";
 		status = "disabled";
 	};
 
@@ -697,6 +703,35 @@ gic: interrupt-controller@ffc01000 {
 		interrupts = <GIC_PPI 9 0xf04>;
 	};
 
+	usbphy: phy {
+		compatible = "rockchip,rk3288-usb-phy";
+		rockchip,grf = <&grf>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+
+		usbphy0: usb-phy0 {
+			#phy-cells = <0>;
+			reg = <0x320>;
+			clocks = <&cru SCLK_OTGPHY0>;
+			clock-names = "phyclk";
+		};
+
+		usbphy1: usb-phy1 {
+			#phy-cells = <0>;
+			reg = <0x334>;
+			clocks = <&cru SCLK_OTGPHY1>;
+			clock-names = "phyclk";
+		};
+
+		usbphy2: usb-phy2 {
+			#phy-cells = <0>;
+			reg = <0x348>;
+			clocks = <&cru SCLK_OTGPHY2>;
+			clock-names = "phyclk";
+		};
+	};
+
 	pinctrl: pinctrl {
 		compatible = "rockchip,rk3288-pinctrl";
 		rockchip,grf = <&grf>;