arm64: dts: renesas: r8a774c0: Add OPPs table for cpu devices

This patch defines OOP tables for all CPUs, similarly to
what done by Takeshi Kihara and Yoshihiro Kaneko for the
R8A77990.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a774c0.dtsi

@@ -44,6 +44,27 @@ can_clk: can {
 		clock-frequency = <0>;
 	};
 
+	cluster1_opp: opp_table10 {
+		compatible = "operating-points-v2";
+		opp-shared;
+		opp-800000000 {
+			opp-hz = /bits/ 64 <800000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+		opp-1000000000 {
+			opp-hz = /bits/ 64 <1000000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+		opp-1200000000 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+			opp-suspend;
+		};
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -55,6 +76,8 @@ a53_0: cpu@0 {
 			power-domains = <&sysc R8A774C0_PD_CA53_CPU0>;
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
+			clocks =<&cpg CPG_CORE R8A774C0_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
 		};
 
 		a53_1: cpu@1 {
@@ -64,6 +87,8 @@ a53_1: cpu@1 {
 			power-domains = <&sysc R8A774C0_PD_CA53_CPU1>;
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
+			clocks =<&cpg CPG_CORE R8A774C0_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
 		};
 
 		L2_CA53: cache-controller-0 {