Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d723cfea authored by Nishanth Menon's avatar Nishanth Menon Committed by Tony Lindgren
Browse files

ARM: dts: am57xx-beagle-x15: Add thermal map to include fan and tmp102 



BeagleBoard-X15 has capability for a fan and has an onboard TMP102
temperature sensor as well. This allows us to create a new thermal
zone (called, un-imaginatively "board"), and allows us to use some
active cooling as temperatures start edge upward in the system by
creating a new alert temperature (emperically 50C) for cpu.

NOTE: Fan is NOT mounted by default on the platform, in such a case,
all we end up doing is switch on a regulator and leak very minimal
current.

Signed-off-by: default avatarNishanth Menon <nm@ti.com>
Acked-by: default avatarEduardo Valentin <edubezval@gmail.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent f7397edf

arch/arm/boot/dts/am57xx-beagle-x15.dts

+49 −0
Original line number Diff line number Diff line
@@ -87,6 +87,7 @@ 
		gpios =  <&tps659038_gpio 1 GPIO_ACTIVE_HIGH>;

		gpio-fan,speed-map = <0     0>,

				     <13000 1>;

		#cooling-cells = <2>;

	};



	extcon_usb1: extcon_usb1 {
@@ -442,6 +443,7 @@ 
		pinctrl-0 = <&tmp102_pins_default>;

		interrupt-parent = <&gpio7>;

		interrupts = <16 IRQ_TYPE_LEVEL_LOW>;

		#thermal-sensor-cells = <1>;

	};

};
@@ -560,3 +562,50 @@ 
&usb2 {

	dr_mode = "peripheral";

};



&cpu_trips {

	cpu_alert1: cpu_alert1 {

		temperature = <50000>; /* millicelsius */

		hysteresis = <2000>; /* millicelsius */

		type = "active";

	};

};



&cpu_cooling_maps {

	map1 {

		trip = <&cpu_alert1>;

		cooling-device = <&gpio_fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

	};

};



&thermal_zones {

	board_thermal: board_thermal {

		polling-delay-passive = <1250>; /* milliseconds */

		polling-delay = <1500>; /* milliseconds */



				/* sensor       ID */

		thermal-sensors = <&tmp102     0>;



		board_trips: trips {

			board_alert0: board_alert {

				temperature = <40000>; /* millicelsius */

				hysteresis = <2000>; /* millicelsius */

				type = "active";

			};



			board_crit: board_crit {

				temperature = <105000>; /* millicelsius */

				hysteresis = <0>; /* millicelsius */

				type = "critical";

			};

		};



		board_cooling_maps: cooling-maps {

			map0 {

				trip = <&board_alert0>;

				cooling-device =

				  <&gpio_fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

			};

		};

       };

};

arch/arm/boot/dts/omap4-cpu-thermal.dtsi

+2 −2
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ cpu_thermal: cpu_thermal { 
			/* sensor       ID */

        thermal-sensors = <&bandgap     0>;



        trips {

	cpu_trips: trips {

                cpu_alert0: cpu_alert {

                        temperature = <100000>; /* millicelsius */

                        hysteresis = <2000>; /* millicelsius */
@@ -31,7 +31,7 @@ cpu_thermal: cpu_thermal { 
                };

        };



	cooling-maps {

	cpu_cooling_maps: cooling-maps {

		map0 {

			trip = <&cpu_alert0>;

			cooling-device =