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/linux/drivers/thermal/
H A DKconfig3 # Generic thermal drivers configuration
6 menuconfig THERMAL config
7 bool "Thermal drivers"
9 Thermal drivers offer a generic mechanism for
10 thermal management. Usually it's made up of one or more thermal
12 Each thermal zone contains its own temperature, trip points,
14 All platforms with ACPI or Open Firmware thermal support can use
18 if THERMAL
21 bool "Thermal netlink management"
24 The thermal framework has a netlink interface to do thermal
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H A Dthermal_of.c3 * of-thermal.c - Generic Thermal Management device tree support.
15 #include <linux/thermal.h>
24 * It maps 'enum thermal_trip_type' found in include/linux/thermal.h
130 struct device_node *np __free(device_node) = of_find_node_by_name(NULL, "thermal-zones"); in of_thermal_zone_find()
132 pr_debug("No thermal zones description\n"); in of_thermal_zone_find()
137 * Search for each thermal zone, a defined sensor in of_thermal_zone_find()
144 count = of_count_phandle_with_args(child, "thermal-sensors", in of_thermal_zone_find()
145 "#thermal-sensor-cells"); in of_thermal_zone_find()
147 pr_err("%pOFn: missing thermal sensor\n", child); in of_thermal_zone_find()
155 ret = of_parse_phandle_with_args(child, "thermal-sensors", in of_thermal_zone_find()
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/linux/Documentation/devicetree/bindings/thermal/
H A Drcar-thermal.yaml5 $id: http://devicetree.org/schemas/thermal/rcar-thermal.yaml#
8 title: Renesas R-Car Thermal
18 - renesas,thermal-r8a73a4 # R-Mobile APE6
19 - renesas,thermal-r8a7779 # R-Car H1
20 - const: renesas,rcar-thermal # Generic without thermal-zone
23 - renesas,thermal-r8a7742 # RZ/G1H
24 - renesas,thermal-r8a7743 # RZ/G1M
25 - renesas,thermal-r8a7744 # RZ/G1N
26 - const: renesas,rcar-gen2-thermal # Generic thermal-zone
29 - renesas,thermal-r8a7790 # R-Car H2
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H A Drcar-gen3-thermal.yaml5 $id: http://devicetree.org/schemas/thermal/rcar-gen3-thermal.yaml#
8 title: Renesas R-Car Gen3 Thermal Sensor
11 On most R-Car Gen3 and later SoCs, the thermal sensor controllers (TSC)
12 control the thermal sensors (THS) which are the analog circuits for
18 $ref: thermal-sensor.yaml#
23 - renesas,r8a774a1-thermal # RZ/G2M
24 - renesas,r8a774b1-thermal # RZ/G2N
25 - renesas,r8a774e1-thermal # RZ/G2H
26 - renesas,r8a7795-thermal # R-Car H3
27 - renesas,r8a7796-thermal # R-Car M3-W
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H A Dbrcm,sr-thermal.txt1 * Broadcom Stingray Thermal
3 This binding describes thermal sensors that is part of Stingray SoCs.
6 - compatible : Must be "brcm,sr-thermal"
10 - #thermal-sensor-cells : Thermal sensor phandler
12 - thermal-sensors: A list of thermal sensor phandles and specifier.
25 compatible = "brcm,sr-thermal";
28 #thermal-sensor-cells = <1>;
32 thermal-zones {
33 ihost0_thermal: ihost0-thermal {
36 thermal-sensors = <&tmon 0>;
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H A Dthermal-sensor.yaml5 $id: http://devicetree.org/schemas/thermal/thermal-sensor.yaml#
8 title: Thermal sensor
14 Thermal management is achieved in devicetree by describing the sensor hardware
15 and the software abstraction of thermal zones required to take appropriate
16 action to mitigate thermal overloads.
18 The following node types are used to completely describe a thermal management
20 - thermal-sensor: device that measures temperature, has SoC-specific bindings
22 - thermal-zones: a container of the following node types used to describe all
23 thermal data for the platform
25 This binding describes the thermal-sensor.
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H A Damazon,al-thermal.txt1 Amazon's Annapurna Labs Thermal Sensor
3 Simple thermal device that allows temperature reading by a single MMIO
7 - compatible: "amazon,al-thermal".
9 - #thermal-sensor-cells: Must be 1. See Documentation/devicetree/bindings/thermal/thermal-sensor.ya…
12 thermal: thermal {
13 compatible = "amazon,al-thermal";
15 #thermal-sensor-cells = <0x1>;
18 thermal-zones {
19 thermal-z0 {
22 thermal-sensors = <&thermal 0>;
H A Dbrcm,ns-thermal.yaml4 $id: http://devicetree.org/schemas/thermal/brcm,ns-thermal.yaml#
7 title: Broadcom Northstar Thermal
13 Thermal sensor that is part of Northstar's DMU (Device Management Unit).
16 - $ref: thermal-sensor.yaml#
20 const: brcm,ns-thermal
26 "#thermal-sensor-cells":
36 thermal: thermal@1800c2c0 {
37 compatible = "brcm,ns-thermal";
39 #thermal-sensor-cells = <0>;
42 thermal-zones {
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H A Dmediatek,thermal.yaml4 $id: http://devicetree.org/schemas/thermal/mediatek,thermal.yaml#
7 title: Mediatek thermal controller for on-SoC temperatures
19 - $ref: thermal-sensor.yaml#
24 - mediatek,mt2701-thermal
25 - mediatek,mt2712-thermal
26 - mediatek,mt7622-thermal
27 - mediatek,mt7981-thermal
28 - mediatek,mt7986-thermal
29 - mediatek,mt8173-thermal
30 - mediatek,mt8183-thermal
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H A Dloongson,ls2k-thermal.yaml4 $id: http://devicetree.org/schemas/thermal/loongson,ls2k-thermal.yaml#
7 title: Thermal sensors on Loongson-2 SoCs
14 - $ref: /schemas/thermal/thermal-sensor.yaml#
20 - loongson,ls2k1000-thermal
21 - loongson,ls2k2000-thermal
24 - loongson,ls2k0500-thermal
25 - const: loongson,ls2k1000-thermal
34 '#thermal-sensor-cells':
47 - loongson,ls2k2000-thermal
65 thermal: thermal-sensor@1fe01500 {
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H A Darmada-thermal.txt1 * Marvell Armada 370/375/380/XP thermal management
6 * marvell,armada370-thermal
7 * marvell,armada375-thermal
8 * marvell,armada380-thermal
9 * marvell,armadaxp-thermal
10 * marvell,armada-ap806-thermal
11 * marvell,armada-ap807-thermal
12 * marvell,armada-cp110-thermal
23 Note: The compatibles marvell,armada370-thermal,
24 marvell,armada380-thermal, and marvell,armadaxp-thermal must point to
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H A Dsocionext,uniphier-thermal.yaml4 $id: http://devicetree.org/schemas/thermal/socionext,uniphier-thermal.yaml#
7 title: Socionext UniPhier thermal monitor
10 This describes the devicetree bindings for thermal monitor supported by
17 $ref: thermal-sensor.yaml#
22 - socionext,uniphier-pxs2-thermal
23 - socionext,uniphier-ld20-thermal
24 - socionext,uniphier-pxs3-thermal
25 - socionext,uniphier-nx1-thermal
30 "#thermal-sensor-cells":
48 // The UniPhier thermal should be a subnode of a "syscon" compatible node.
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H A Damlogic,thermal.yaml4 $id: http://devicetree.org/schemas/thermal/amlogic,thermal.yaml#
7 title: Amlogic Thermal
12 description: Binding for Amlogic Thermal
14 $ref: thermal-sensor.yaml#
21 - amlogic,g12a-cpu-thermal
22 - amlogic,g12a-ddr-thermal
23 - const: amlogic,g12a-thermal
24 - const: amlogic,a1-cpu-thermal
42 '#thermal-sensor-cells':
57 compatible = "amlogic,g12a-cpu-thermal",
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H A Dfsl,scu-thermal.yaml4 $id: http://devicetree.org/schemas/thermal/fsl,scu-thermal.yaml#
7 title: i.MX SCU Client Device Node - Thermal Based on SCU Message Protocol
16 - $ref: thermal-sensor.yaml#
22 - fsl,imx8dxl-sc-thermal
23 - fsl,imx8qxp-sc-thermal
24 - const: fsl,imx-sc-thermal
26 '#thermal-sensor-cells':
36 thermal-sensor {
37 compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
38 #thermal-sensor-cells = <1>;
H A Dbrcm,bcm2835-thermal.yaml4 $id: http://devicetree.org/schemas/thermal/brcm,bcm2835-thermal.yaml#
7 title: Broadcom BCM2835 thermal sensor
13 - $ref: thermal-sensor.yaml#
18 - brcm,bcm2835-thermal
19 - brcm,bcm2836-thermal
20 - brcm,bcm2837-thermal
28 "#thermal-sensor-cells":
42 thermal@7e212000 {
43 compatible = "brcm,bcm2835-thermal";
46 #thermal-sensor-cells = <0>;
H A Dst,stm32-thermal.yaml4 $id: http://devicetree.org/schemas/thermal/st,stm32-thermal.yaml#
7 title: STMicroelectronics STM32 digital thermal sensor (DTS)
12 $ref: thermal-sensor.yaml#
16 const: st,stm32-thermal
31 "#thermal-sensor-cells":
47 dts: thermal@50028000 {
48 compatible = "st,stm32-thermal";
52 #thermal-sensor-cells = <0>;
56 thermal-zones {
57 cpu_thermal: cpu-thermal {
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/linux/Documentation/ABI/testing/
H A Dsysfs-class-thermal1 What: /sys/class/thermal/thermal_zoneX/type
3 Strings which represent the thermal zone type.
4 This is given by thermal zone driver as part of registration.
5 E.g: "acpitz" indicates it's an ACPI thermal device.
12 What: /sys/class/thermal/thermal_zoneX/temp
14 Current temperature as reported by thermal zone (sensor).
20 What: /sys/class/thermal/thermal_zoneX/mode
24 currently managing the thermal zone. It can be either default
28 enable Kernel Thermal management.
30 Preventing kernel thermal zone driver actions upon
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/linux/drivers/thermal/testing/
H A Dcommand.c7 * Thermal subsystem testing facility.
9 * This facility allows the thermal core functionality to be exercised in a
12 * It resides in the "thermal-testing" directory under the debugfs root and
14 * representing a thermal testing facility command.
18 * The "addtz" command causes a new test thermal zone template to be created,
21 * # echo addtz > /sys/kernel/debug/thermal-testing/command
23 * That template will be represented as a subdirectory in the "thermal-testing"
26 * # ls /sys/kernel/debug/thermal-testing/
29 * The thermal zone template can be populated with trip points with the help of
32 * # echo tzaddtrip:0 > /sys/kernel/debug/thermal-testing/command
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/linux/tools/
H A DMakefile33 @echo ' tmon - thermal monitoring and tuning tool'
35 @echo ' thermal-engine - thermal monitoring tool'
36 @echo ' thermal - thermal library'
101 thermal: FORCE target
108 $(call descend,thermal/$@)
111 $(call descend,thermal/$@)
113 thermal-engine: FORCE thermal
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/linux/drivers/thermal/ti-soc-thermal/
H A DMakefile2 obj-$(CONFIG_TI_SOC_THERMAL) += ti-soc-thermal.o
3 ti-soc-thermal-y := ti-bandgap.o
4 ti-soc-thermal-$(CONFIG_TI_THERMAL) += ti-thermal-common.o
5 ti-soc-thermal-$(CONFIG_DRA752_THERMAL) += dra752-thermal-data.o
6 ti-soc-thermal-$(CONFIG_OMAP3_THERMAL) += omap3-thermal-data.o
7 ti-soc-thermal-$(CONFIG_OMAP4_THERMAL) += omap4-thermal-data.o
8 ti-soc-thermal-$(CONFIG_OMAP5_THERMAL) += omap5-thermal-data.o
/linux/arch/arm64/boot/dts/ti/
H A Dk3-j721s2-thermal.dtsi6 #include <dt-bindings/thermal/thermal.h>
8 wkup0_thermal: wkup0-thermal {
11 thermal-sensors = <&wkup_vtm0 0>;
22 wkup1_thermal: wkup1-thermal {
25 thermal-sensors = <&wkup_vtm0 1>;
36 main0_thermal: main0-thermal {
39 thermal-sensors = <&wkup_vtm0 2>;
50 main1_thermal: main1-thermal {
53 thermal-sensors = <&wkup_vtm0 3>;
64 main2_thermal: main2-thermal {
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H A Dk3-j721e-thermal.dtsi6 #include <dt-bindings/thermal/thermal.h>
8 thermal_zones: thermal-zones {
9 wkup_thermal: wkup-thermal {
12 thermal-sensors = <&wkup_vtm0 0>;
23 mpu_thermal: mpu-thermal {
26 thermal-sensors = <&wkup_vtm0 1>;
37 c7x_thermal: c7x-thermal {
40 thermal-sensors = <&wkup_vtm0 2>;
51 gpu_thermal: gpu-thermal {
54 thermal-sensors = <&wkup_vtm0 3>;
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/linux/drivers/net/wireless/intel/iwlwifi/dvm/
H A Dtt.h25 /* Thermal Throttling State Machine states */
35 * struct iwl_tt_restriction - Thermal Throttling restriction table
40 * This table is used by advance thermal throttling management
41 * based on the current thermal throttling state, and determines
51 * struct iwl_tt_trans - Thermal Throttling transaction table
52 * @next_state: next thermal throttling mode
56 * This is used by the advanced thermal throttling algorithm
57 * to determine the next thermal state to go based on the
67 * struct iwl_tt_mgmt - Thermal Throttling Management structure
68 * @advanced_tt: advanced thermal throttle required
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/linux/Documentation/driver-api/thermal/
H A Dx86_pkg_temperature_thermal.rst7 * x86: with package level thermal management
17 Chapter 14.6: PACKAGE LEVEL THERMAL MANAGEMENT
22 This driver register CPU digital temperature package level sensor as a thermal
25 user mode can receive notification via thermal notification mechanism and can
31 Each package will register as a thermal zone under /sys/class/thermal.
35 /sys/class/thermal/thermal_zone1
43 are in milli-degree Celsius. Refer to "Documentation/driver-api/thermal/sysfs-api.rst" for
44 thermal sys-fs details.
46 Any value other than 0 in these trip points, can trigger thermal notifications.
47 Setting 0, stops sending thermal notifications.
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/linux/tools/thermal/tmon/
H A Dtmon.84 \fBtmon\fP - A monitoring and testing tool for Linux kernel thermal subsystem
12 \fBtmon \fP can be used to visualize thermal relationship and
13 real-time thermal data; tune
14 and test cooling devices and sensors; collect thermal data for offline
21 1. Thermal relationships:
22 - show thermal zone information
24 - show trip point binding within each thermal zone
28 - show temperature of all thermal zones w.r.t. its trip points and types
31 3. Thermal relationship learning and device tuning
33 controller, user can pair a cooling device to a thermal sensor for
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