arm64: dts: renesas: r8a779a0: Add RPC node

Add device node for RPC on R8A779A0 SoC.
Signed-off-by: Duc Nguyen <duc.nguyen.ub@renesas.com>
[wsa: rebased]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20211006085836.42155-4-wsa+renesas@sang-engineering.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a779a0.dtsi

@@ -1105,6 +1105,23 @@ mmc0: mmc@ee140000 {
 			status = "disabled";
 		};
 
+		rpc: spi@ee200000 {
+			compatible = "renesas,r8a779a0-rpc-if",
+				     "renesas,rcar-gen3-rpc-if";
+			reg = <0 0xee200000 0 0x200>,
+			      <0 0x08000000 0 0x04000000>,
+			      <0 0xee208000 0 0x100>;
+			reg-names = "regs", "dirmap", "wbuf";
+			interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 629>;
+			clock-names = "rpc";
+			power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
+			resets = <&cpg 629>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		ipmmu_rt0: iommu@ee480000 {
 			compatible = "renesas,ipmmu-r8a779a0";
 			reg = <0 0xee480000 0 0x20000>;