arm64: dts: imx8mp: Add cpu-freq support

Add A53 OPP table and cpu regulator to support cpu-freq driver.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Anson Huang <Anson.Huang@nxp.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: NXP Linux Team <linux-imx@nxp.com>
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mp.dtsi

@@ -61,6 +61,7 @@ A53_0: cpu@0 {
 			next-level-cache = <&A53_L2>;
 			nvmem-cells = <&cpu_speed_grade>;
 			nvmem-cell-names = "speed_grade";
+			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
 		};
 
@@ -78,6 +79,7 @@ A53_1: cpu@1 {
 			d-cache-line-size = <64>;
 			d-cache-sets = <128>;
 			next-level-cache = <&A53_L2>;
+			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
 		};
 
@@ -95,6 +97,7 @@ A53_2: cpu@2 {
 			d-cache-line-size = <64>;
 			d-cache-sets = <128>;
 			next-level-cache = <&A53_L2>;
+			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
 		};
 
@@ -112,6 +115,7 @@ A53_3: cpu@3 {
 			d-cache-line-size = <64>;
 			d-cache-sets = <128>;
 			next-level-cache = <&A53_L2>;
+			operating-points-v2 = <&a53_opp_table>;
 			#cooling-cells = <2>;
 		};
 
@@ -124,6 +128,35 @@ A53_L2: l2-cache0 {
 		};
 	};
 
+	a53_opp_table: opp-table {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-1200000000 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <850000>;
+			opp-supported-hw = <0x8a0>, <0x7>;
+			clock-latency-ns = <150000>;
+			opp-suspend;
+		};
+
+		opp-1600000000 {
+			opp-hz = /bits/ 64 <1600000000>;
+			opp-microvolt = <950000>;
+			opp-supported-hw = <0xa0>, <0x7>;
+			clock-latency-ns = <150000>;
+			opp-suspend;
+		};
+
+		opp-1800000000 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <1000000>;
+			opp-supported-hw = <0x20>, <0x3>;
+			clock-latency-ns = <150000>;
+			opp-suspend;
+		};
+	};
+
 	osc_32k: clock-osc-32k {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;