Add rpi-poe-fan driver (6bad15ac) · Commits · 方亚芬 / raspberrypi_linux

arch/arm/boot/dts/overlays/Makefile

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		@@ -1576,6 +1576,12 @@ Params: touchscreen-size-x Touchscreen X resolution (default 800)
		touchscreen-swapped-x-y Swap X and Y cordinates (default 0);


		Name: rpi-poe
		Info: Raspberry Pi POE HAT
		Load: dtoverlay=rpi-poe
		Params: <None>


		Name: rpi-proto
		Info: Configures the RPi Proto audio card
		Load: dtoverlay=rpi-proto

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		/*
		* Overlay for the Raspberry Pi POE HAT.
		*/
		/dts-v1/;
		/plugin/;

		/ {
		compatible = "brcm,bcm2708";

		fragment@0 {
		target-path = "/";
		__overlay__ {
		fan0: rpi-poe-fan@0 {
		compatible = "rpi-poe-fan";
		firmware = <&firmware>;
		cooling-min-state = <0>;
		cooling-max-state = <3>;
		#cooling-cells = <2>;
		cooling-levels = <0 50 150 255>;
		status = "okay";
		};
		};
		};

		fragment@1 {
		target = <&cpu_thermal>;
		__overlay__ {
		trips {
		threshold: trip-point@0 {
		temperature = <45000>;
		hysteresis = <5000>;
		type = "active";
		};
		target: trip-point@1 {
		temperature = <50000>;
		hysteresis = <2000>;
		type = "active";
		};
		cpu_hot: cpu_hot@0 {
		temperature = <55000>;
		hysteresis = <2000>;
		type = "active";
		};
		};
		cooling-maps {
		map0 {
		trip = <&threshold>;
		cooling-device = <&fan0 0 1>;
		};
		map1 {
		trip = <&target>;
		cooling-device = <&fan0 1 2>;
		};
		map2 {
		trip = <&cpu_hot>;
		cooling-device = <&fan0 2 3>;
		};
		};
		};
		};
		};

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