arm64: tegra: Add current monitors for Jetson Xavier

Add the INA3221 current monitors that are present on the Jetson AGX
Xavier and Jetson Xavier NX boards.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi

@@ -53,6 +53,56 @@ memory-controller@2c00000 {
 			status = "okay";
 		};
 
+		i2c@c240000 {
+			status = "okay";
+
+			power-sensor@40 {
+				compatible = "ti,ina3221";
+				reg = <0x40>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				input@0 {
+					reg = <0x0>;
+					label = "GPU";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+				input@1 {
+					reg = <0x1>;
+					label = "CPU";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+				input@2 {
+					reg = <0x2>;
+					label = "SOC";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+			};
+
+			power-sensor@41 {
+				compatible = "ti,ina3221";
+				reg = <0x41>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				input@0 {
+					reg = <0x0>;
+					label = "CV";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+				input@1 {
+					reg = <0x1>;
+					label = "VDDRQ";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+				input@2 {
+					reg = <0x2>;
+					label = "SYS5V";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+			};
+		};
+
 		serial@3110000 {
 			status = "okay";
 		};

arch/arm64/boot/dts/nvidia/tegra194-p3668.dtsi

@@ -50,6 +50,33 @@ memory-controller@2c00000 {
 			status = "okay";
 		};
 
+		i2c@c250000 {
+			status = "okay";
+
+			power-sensor@40 {
+				compatible = "ti,ina3221";
+				reg = <0x40>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				input@0 {
+					reg = <0x0>;
+					label = "VDD_IN";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+				input@1 {
+					reg = <0x1>;
+					label = "VDD_CPU_GPU_CV";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+				input@2 {
+					reg = <0x2>;
+					label = "VDD_SOC";
+					shunt-resistor-micro-ohms = <5000>;
+				};
+			};
+		};
+
 		serial@3100000 {
 			status = "okay";
 		};