1 files changed, 95 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
new file mode 100644
index 000000000000..544038b614e1
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
@@ -0,0 +1,95 @@
+/*
+ * Overlay for the Raspberry Pi POE HAT.
+ */
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			fan0: rpi-poe-fan@0 {
+				compatible = "raspberrypi,rpi-poe-fan";
+				firmware = <&firmware>;
+				cooling-min-state = <0>;
+				cooling-max-state = <4>;
+				#cooling-cells = <2>;
+				cooling-levels = <0 31 63 150 255>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&cpu_thermal>;
+		__overlay__ {
+			trips {
+				trip0: trip0 {
+					temperature = <40000>;
+					hysteresis = <2000>;
+					type = "active";
+				};
+				trip1: trip1 {
+					temperature = <45000>;
+					hysteresis = <2000>;
+					type = "active";
+				};
+				trip2: trip2 {
+					temperature = <50000>;
+					hysteresis = <2000>;
+					type = "active";
+				};
+				trip3: trip3 {
+					temperature = <55000>;
+					hysteresis = <5000>;
+					type = "active";
+				};
+			};
+			cooling-maps {
+				map0 {
+					trip = <&trip0>;
+					cooling-device = <&fan0 0 1>;
+				};
+				map1 {
+					trip = <&trip1>;
+					cooling-device = <&fan0 1 2>;
+				};
+				map2 {
+					trip = <&trip2>;
+					cooling-device = <&fan0 2 3>;
+				};
+				map3 {
+					trip = <&trip3>;
+					cooling-device = <&fan0 3 4>;
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target-path = "/__overrides__";
+		__overlay__ {
+			poe_fan_temp0 =		<&trip0>,"temperature:0";
+			poe_fan_temp0_hyst =	<&trip0>,"hysteresis:0";
+			poe_fan_temp1 =		<&trip1>,"temperature:0";
+			poe_fan_temp1_hyst =	<&trip1>,"hysteresis:0";
+			poe_fan_temp2 =		<&trip2>,"temperature:0";
+			poe_fan_temp2_hyst =	<&trip2>,"hysteresis:0";
+			poe_fan_temp3 =		<&trip3>,"temperature:0";
+			poe_fan_temp3_hyst =	<&trip3>,"hysteresis:0";
+		};
+	};
+
+	__overrides__ {
+		poe_fan_temp0 =		<&trip0>,"temperature:0";
+		poe_fan_temp0_hyst =	<&trip0>,"hysteresis:0";
+		poe_fan_temp1 =		<&trip1>,"temperature:0";
+		poe_fan_temp1_hyst =	<&trip1>,"hysteresis:0";
+		poe_fan_temp2 =		<&trip2>,"temperature:0";
+		poe_fan_temp2_hyst =	<&trip2>,"hysteresis:0";
+		poe_fan_temp3 =		<&trip3>,"temperature:0";
+		poe_fan_temp3_hyst =	<&trip3>,"hysteresis:0";
+	};
+};