Added device tree overlays for the rpi-power HAT.

Author: LucasH-rp

arch/arm/boot/dts/overlays/rpi-power-hat-b-overlay.dts

@@ -0,0 +1,63 @@
+/dts-v1/;
+/plugin/;
+
+// Overlay for the Raspberry Pi Power Hat.
+// 1 of 2 overlays required for top/bottom interchangeability 
+
+/ {
+    compatible = "brcm,bcm2835";
+
+    fragment@0 {
+        target = <&i2c1>;
+        __overlay__ {
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            power_control: fxl6408@43 {
+                reg = <0x43>;
+                compatible = "fcs,fxl6408";
+                gpio-controller;
+                #gpio-cells = <2>;
+                gpio-line-names = 
+                    "B1_PWR",
+                    "B2_PWR",      
+                    "B3",
+                    "B4",
+                    "B5",
+                    "B6",
+                    "B7",
+                    "B8";
+            };
+
+            pwr1_monitor: ina260@42 {
+                reg = <0x42>; 
+                compatible = "ti,ina260";
+            };
+
+            pwr2_monitor: ina260@4c {
+                reg = <0x4c>; 
+                compatible = "ti,ina260";
+            };
+        };
+    };
+
+    fragment@1 {
+        target-path = "/";
+        __overlay__ {
+            rpi_power_hat_b: rpi-power-hat-b {
+                compatible = "Raspberry Pi,rpi-power-hat-b";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                
+                // References to the I2C devices
+                power-controller = <&power_control>;
+                power1-monitor = <&pwr1_monitor>;
+                power2-monitor = <&pwr2_monitor>;
+                
+                // HAT metadata
+                hat-name = "rpi-power-hat Bottom";
+            };
+        };
+    };
+};

arch/arm/boot/dts/overlays/rpi-power-hat-t-overlay.dts

@@ -0,0 +1,63 @@
+/dts-v1/;
+/plugin/;
+
+// Overlay for the Raspberry Pi Power Hat.
+// 2 of 2 overlays required for top/bottom interchangeability 
+
+/ {
+    compatible = "brcm,bcm2835";
+
+    fragment@0 {
+        target = <&i2c1>;
+        __overlay__ {
+            
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            power_control: fxl6408@44 {
+                reg = <0x44>;
+                compatible = "fcs,fxl6408";
+                gpio-controller;
+                #gpio-cells = <2>;
+                gpio-line-names = 
+                    "T1_PWR",
+                    "T2_PWR",      
+                    "T3",
+                    "T4",
+                    "T5",
+                    "T6",
+                    "T7",
+                    "T8";
+            };
+
+            pwr1_monitor: ina260@46 {
+                reg = <0x46>; 
+                compatible = "ti,ina260";
+            };
+
+            pwr2_monitor: ina260@4d {
+                reg = <0x4d>;
+                compatible = "ti,ina260";
+            };
+        };
+    };
+
+    fragment@1 {
+        target-path = "/";
+        __overlay__ {
+            rpi_power_hat_t: rpi-power-hat-t {
+                compatible = "Raspberry Pi,rpi-power-hat-t";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                
+                // References to the I2C devices
+                power-controller = <&power_control>;
+                power1-monitor = <&pwr1_monitor>;
+                power2-monitor = <&pwr2_monitor>;
+                
+                // HAT metadata
+                hat-name = "rpi-power-hat Top";
+            };
+        };
+    };
+};