arm64: dts: renesas: r8a779{7|8}0: add TPU support

Describe TPU in the R8A779{7|8}0 device trees.

Based on the original (and large) patches by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a77970.dtsi

@@ -614,6 +614,16 @@ scif4: serial@e6c40000 {
 			status = "disabled";
 		};
 
+		tpu: pwm@e6e80000 {
+			compatible = "renesas,tpu-r8a77970", "renesas,tpu";
+			reg = <0 0xe6e80000 0 0x148>;
+			interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 304>;
+			power-domains = <&sysc R8A77970_PD_ALWAYS_ON>;
+			resets = <&cpg 304>;
+			#pwm-cells = <3>;
+			status = "disabled";
+		};
 
 		vin0: video@e6ef0000 {
 			compatible = "renesas,vin-r8a77970";

arch/arm64/boot/dts/renesas/r8a77980.dtsi

@@ -666,6 +666,17 @@ scif4: serial@e6c40000 {
 			status = "disabled";
 		};
 
+		tpu: pwm@e6e80000 {
+			compatible = "renesas,tpu-r8a77980", "renesas,tpu";
+			reg = <0 0xe6e80000 0 0x148>;
+			interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 304>;
+			power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;
+			resets = <&cpg 304>;
+			#pwm-cells = <3>;
+			status = "disabled";
+		};
+
 		vin0: video@e6ef0000 {
 			compatible = "renesas,vin-r8a77980";
 			reg = <0 0xe6ef0000 0 0x1000>;