arm64: dts: renesas: r8a774b1: Add USB2.0 phy and host (EHCI/OHCI) device nodes

Add USB2.0 phy and host (EHCI/OHCI) device nodes on RZ/G2N SoC dtsi.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Link: https://lore.kernel.org/r/1570531132-21856-8-git-send-email-fabrizio.castro@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a774b1.dtsi

@@ -1663,33 +1663,76 @@ usb3_peri0: usb@ee020000 {
 		};
 
 		ohci0: usb@ee080000 {
+			compatible = "generic-ohci";
 			reg = <0 0xee080000 0 0x100>;
-			/* placeholder */
+			interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 703>, <&cpg CPG_MOD 704>;
+			phys = <&usb2_phy0 1>;
+			phy-names = "usb";
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 703>, <&cpg 704>;
+			status = "disabled";
 		};
 
 		ohci1: usb@ee0a0000 {
+			compatible = "generic-ohci";
 			reg = <0 0xee0a0000 0 0x100>;
-			/* placeholder */
+			interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 702>;
+			phys = <&usb2_phy1 1>;
+			phy-names = "usb";
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 702>;
+			status = "disabled";
 		};
 
 		ehci0: usb@ee080100 {
+			compatible = "generic-ehci";
 			reg = <0 0xee080100 0 0x100>;
-			/* placeholder */
+			interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 703>, <&cpg CPG_MOD 704>;
+			phys = <&usb2_phy0 2>;
+			phy-names = "usb";
+			companion = <&ohci0>;
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 703>, <&cpg 704>;
+			status = "disabled";
 		};
 
 		ehci1: usb@ee0a0100 {
+			compatible = "generic-ehci";
 			reg = <0 0xee0a0100 0 0x100>;
-			/* placeholder */
+			interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 702>;
+			phys = <&usb2_phy1 2>;
+			phy-names = "usb";
+			companion = <&ohci1>;
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 702>;
+			status = "disabled";
 		};
 
 		usb2_phy0: usb-phy@ee080200 {
+			compatible = "renesas,usb2-phy-r8a774b1",
+				     "renesas,rcar-gen3-usb2-phy";
 			reg = <0 0xee080200 0 0x700>;
-			/* placeholder */
+			interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 703>, <&cpg CPG_MOD 704>;
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 703>, <&cpg 704>;
+			#phy-cells = <1>;
+			status = "disabled";
 		};
 
 		usb2_phy1: usb-phy@ee0a0200 {
+			compatible = "renesas,usb2-phy-r8a774b1",
+				     "renesas,rcar-gen3-usb2-phy";
 			reg = <0 0xee0a0200 0 0x700>;
-			/* placeholder */
+			clocks = <&cpg CPG_MOD 702>;
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 702>;
+			#phy-cells = <1>;
+			status = "disabled";
 		};
 
 		sdhi0: sd@ee100000 {