arm64: dts: meson: Add DDR PMU node

Add DDR PMU device node for G12 series SoC
Signed-off-by: Jiucheng Xu <jiucheng.xu@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20221109015818.194927-4-jiucheng.xu@amlogic.comSigned-off-by: Neil Armstrong <neil.armstrong@linaro.org>

arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi

@@ -1705,6 +1705,12 @@ internal_ephy: ethernet_phy@8 {
 			};
 		};
 
+		pmu: pmu@ff638000 {
+			reg = <0x0 0xff638000 0x0 0x100>,
+			      <0x0 0xff638c00 0x0 0x100>;
+			interrupts = <GIC_SPI 52 IRQ_TYPE_EDGE_RISING>;
+		};
+
 		aobus: bus@ff800000 {
 			compatible = "simple-bus";
 			reg = <0x0 0xff800000 0x0 0x100000>;

arch/arm64/boot/dts/amlogic/meson-g12a.dtsi

@@ -134,3 +134,7 @@ map1 {
 		};
 	};
 };
+
+&pmu {
+	compatible = "amlogic,g12a-ddr-pmu";
+};

arch/arm64/boot/dts/amlogic/meson-g12b.dtsi

@@ -140,3 +140,7 @@ map1 {
 &mali {
 	dma-coherent;
 };
+
+&pmu {
+	compatible = "amlogic,g12b-ddr-pmu";
+};

arch/arm64/boot/dts/amlogic/meson-sm1.dtsi

@@ -521,6 +521,10 @@ &pcie {
 	power-domains = <&pwrc PWRC_SM1_PCIE_ID>;
 };
 
+&pmu {
+	compatible = "amlogic,sm1-ddr-pmu";
+};
+
 &pwrc {
 	compatible = "amlogic,meson-sm1-pwrc";
 };