Lines Matching +full:cooling +full:- +full:maps
1 # SPDX-License-Identifier: (GPL-2.0)
4 ---
5 $id: http://devicetree.org/schemas/thermal/thermal-zones.yaml#
6 $schema: http://devicetree.org/meta-schemas/base.yaml#
11 - Daniel Lezcano <[email protected]>
15 and the software abstraction of cooling devices and thermal zones required to
20 - thermal-sensor: device that measures temperature, has SoC-specific bindings
21 - cooling-device: device used to dissipate heat either passively or actively
22 - thermal-zones: a container of the following node types used to describe all
25 This binding describes the thermal-zones.
27 The polling-delay properties of a thermal-zone are bound to the maximum dT/dt
29 1. when passive cooling is activated (polling-delay-passive)
30 2. when the zone just needs to be monitored (polling-delay) or when
31 active cooling is activated.
42 const: thermal-zones
44 A /thermal-zones node is required in order to use the thermal framework to
48 platform-data regarding temperature thresholds and the mitigation actions
52 # Node name is limited in size due to Linux kernel requirements - 19
55 "^[a-zA-Z][a-zA-Z0-9\\-]{1,10}-thermal$":
60 this zone, one sub-node containing the various trip points for this
61 zone and one sub-node containing all the zone cooling-maps.
64 polling-delay:
72 polling-delay-passive:
76 checking this thermal zone while doing passive cooling. Setting
81 critical-action:
94 - shutdown
95 - reboot
97 thermal-sensors:
98 $ref: /schemas/types.yaml#/definitions/phandle-array
105 $ref: /schemas/types.yaml#/definitions/uint32-array
111 z = c0 * x0 + c1 * x1 + ... + c(n-1) * x(n-1) + cn
118 sustainable-power:
123 sustainable power of a 4-inch phone is typically 2000mW, while on a
124 10-inch tablet is around 4500mW.
131 be taken are defined in another node called cooling-maps.
134 "^[a-zA-Z][a-zA-Z0-9\\-_]{0,63}$":
140 minimum: -273000
150 millicelsius. Any cooling action initiated by the framework is
152 (trip temperature - hysteresis). This potentially prevents a
154 cooling action is removed.
159 - active # enable active cooling e.g. fans
160 - passive # enable passive cooling e.g. throttling cpu
161 - hot # send notification to driver
162 - critical # send notification to driver, trigger shutdown
181 help in cooling e.g. fans can be sped up or slowed down
184 - temperature
185 - hysteresis
186 - type
191 cooling-maps:
198 trip and the target cooling device state.
201 "^map[-a-zA-Z0-9]*$":
210 cooling-device:
211 $ref: /schemas/types.yaml#/definitions/phandle-array
213 A list of cooling device phandles along with the minimum
214 and maximum cooling state specifiers for each cooling
215 device. Using the THERMAL_NO_LIMIT (-1UL) constant in the
216 cooling-device phandle limit specifier lets the framework
217 use the minimum and maximum cooling state for that cooling
223 The cooling contribution to the thermal zone of the referred
224 cooling device at the referred trip point. The contribution is
225 a ratio of the sum of all cooling contributions within a
229 - trip
230 - cooling-device
234 - thermal-sensors
241 - |
242 #include <dt-bindings/interrupt-controller/arm-gic.h>
243 #include <dt-bindings/thermal/thermal.h>
247 #address-cells = <2>;
248 #size-cells = <2>;
252 tsens0: thermal-sensor@c263000 {
253 compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
259 interrupt-names = "uplow", "critical";
260 #thermal-sensor-cells = <1>;
263 tsens1: thermal-sensor@c265000 {
264 compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
270 interrupt-names = "uplow", "critical";
271 #thermal-sensor-cells = <1>;
277 thermal-zones {
278 cpu0-thermal {
279 polling-delay-passive = <250>;
280 polling-delay = <1000>;
282 thermal-sensors = <&tsens0 1>;
285 cpu0_alert0: trip-point0 {
291 cpu0_alert1: trip-point1 {
304 cooling-maps {
308 cooling-device = <&CPU0 3 3>, <&CPU1 3 3>,
315 cooling-device = <&CPU0 5 5>, <&CPU1 5 5>,
323 cluster0-thermal {
324 polling-delay-passive = <250>;
325 polling-delay = <1000>;
327 thermal-sensors = <&tsens0 5>;
330 cluster0_alert0: trip-point0 {
345 gpu-top-thermal {
346 polling-delay-passive = <250>;
347 polling-delay = <1000>;
349 thermal-sensors = <&tsens0 11>;
352 gpu1_alert0: trip-point0 {