arm64: dts: renesas: r8a77961: Add GPIO nodes

Add device nodes for the GPIO controllers on the Renesas R-Car M3-W+
(r8a77961) SoC.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Tested-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Link: https://lore.kernel.org/r/20191216124740.16647-3-geert+renesas@glider.be

arch/arm64/boot/dts/renesas/r8a77961.dtsi

@@ -328,49 +328,124 @@ rwdt: watchdog@e6020000 {
 			status = "disabled";
 		};
 
+		gpio0: gpio@e6050000 {
+			compatible = "renesas,gpio-r8a77961",
+				     "renesas,rcar-gen3-gpio";
+			reg = <0 0xe6050000 0 0x50>;
+			interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+			#gpio-cells = <2>;
+			gpio-controller;
+			gpio-ranges = <&pfc 0 0 16>;
+			#interrupt-cells = <2>;
+			interrupt-controller;
+			clocks = <&cpg CPG_MOD 912>;
+			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+			resets = <&cpg 912>;
+		};
+
+		gpio1: gpio@e6051000 {
+			compatible = "renesas,gpio-r8a77961",
+				     "renesas,rcar-gen3-gpio";
+			reg = <0 0xe6051000 0 0x50>;
+			interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
+			#gpio-cells = <2>;
+			gpio-controller;
+			gpio-ranges = <&pfc 0 32 29>;
+			#interrupt-cells = <2>;
+			interrupt-controller;
+			clocks = <&cpg CPG_MOD 911>;
+			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+			resets = <&cpg 911>;
+		};
+
 		gpio2: gpio@e6052000 {
+			compatible = "renesas,gpio-r8a77961",
+				     "renesas,rcar-gen3-gpio";
 			reg = <0 0xe6052000 0 0x50>;
+			interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
 			#gpio-cells = <2>;
 			gpio-controller;
+			gpio-ranges = <&pfc 0 64 15>;
 			#interrupt-cells = <2>;
 			interrupt-controller;
-			/* placeholder */
+			clocks = <&cpg CPG_MOD 910>;
+			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+			resets = <&cpg 910>;
 		};
 
 		gpio3: gpio@e6053000 {
+			compatible = "renesas,gpio-r8a77961",
+				     "renesas,rcar-gen3-gpio";
 			reg = <0 0xe6053000 0 0x50>;
+			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
 			#gpio-cells = <2>;
 			gpio-controller;
+			gpio-ranges = <&pfc 0 96 16>;
 			#interrupt-cells = <2>;
 			interrupt-controller;
-			/* placeholder */
+			clocks = <&cpg CPG_MOD 909>;
+			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+			resets = <&cpg 909>;
 		};
 
 		gpio4: gpio@e6054000 {
+			compatible = "renesas,gpio-r8a77961",
+				     "renesas,rcar-gen3-gpio";
 			reg = <0 0xe6054000 0 0x50>;
+			interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
 			#gpio-cells = <2>;
 			gpio-controller;
+			gpio-ranges = <&pfc 0 128 18>;
 			#interrupt-cells = <2>;
 			interrupt-controller;
-			/* placeholder */
+			clocks = <&cpg CPG_MOD 908>;
+			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+			resets = <&cpg 908>;
 		};
 
 		gpio5: gpio@e6055000 {
+			compatible = "renesas,gpio-r8a77961",
+				     "renesas,rcar-gen3-gpio";
 			reg = <0 0xe6055000 0 0x50>;
+			interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
 			#gpio-cells = <2>;
 			gpio-controller;
+			gpio-ranges = <&pfc 0 160 26>;
 			#interrupt-cells = <2>;
 			interrupt-controller;
-			/* placeholder */
+			clocks = <&cpg CPG_MOD 907>;
+			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+			resets = <&cpg 907>;
 		};
 
 		gpio6: gpio@e6055400 {
+			compatible = "renesas,gpio-r8a77961",
+				     "renesas,rcar-gen3-gpio";
 			reg = <0 0xe6055400 0 0x50>;
+			interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
 			#gpio-cells = <2>;
 			gpio-controller;
+			gpio-ranges = <&pfc 0 192 32>;
 			#interrupt-cells = <2>;
 			interrupt-controller;
-			/* placeholder */
+			clocks = <&cpg CPG_MOD 906>;
+			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+			resets = <&cpg 906>;
+		};
+
+		gpio7: gpio@e6055800 {
+			compatible = "renesas,gpio-r8a77961",
+				     "renesas,rcar-gen3-gpio";
+			reg = <0 0xe6055800 0 0x50>;
+			interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+			#gpio-cells = <2>;
+			gpio-controller;
+			gpio-ranges = <&pfc 0 224 4>;
+			#interrupt-cells = <2>;
+			interrupt-controller;
+			clocks = <&cpg CPG_MOD 905>;
+			power-domains = <&sysc R8A77961_PD_ALWAYS_ON>;
+			resets = <&cpg 905>;
 		};
 
 		pfc: pin-controller@e6060000 {