mirror of https://gitee.com/openkylin/linux.git
104 lines
2.5 KiB
Plaintext
104 lines
2.5 KiB
Plaintext
/*
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* Device tree sources for Exynos5422 thermal zone
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*
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* Copyright (c) 2015 Lukasz Majewski <l.majewski@samsung.com>
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* Anand Moon <linux.amoon@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <dt-bindings/thermal/thermal.h>
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/ {
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thermal-zones {
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cpu0_thermal: cpu0-thermal {
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thermal-sensors = <&tmu_cpu0 0>;
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polling-delay-passive = <250>;
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polling-delay = <0>;
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trips {
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cpu_alert0: cpu-alert-0 {
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temperature = <50000>; /* millicelsius */
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hysteresis = <5000>; /* millicelsius */
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type = "active";
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};
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cpu_alert1: cpu-alert-1 {
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temperature = <60000>; /* millicelsius */
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hysteresis = <5000>; /* millicelsius */
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type = "active";
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};
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cpu_alert2: cpu-alert-2 {
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temperature = <70000>; /* millicelsius */
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hysteresis = <5000>; /* millicelsius */
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type = "active";
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};
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cpu_crit0: cpu-crit-0 {
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temperature = <120000>; /* millicelsius */
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hysteresis = <0>; /* millicelsius */
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type = "critical";
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};
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/*
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* Exyunos542x support only 4 trip-points
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* so for these polling mode is required.
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* Start polling at temperature level of last
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* interrupt-driven trip: cpu_alert2
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*/
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cpu_alert3: cpu-alert-3 {
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temperature = <70000>; /* millicelsius */
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hysteresis = <10000>; /* millicelsius */
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type = "passive";
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};
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cpu_alert4: cpu-alert-4 {
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temperature = <85000>; /* millicelsius */
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hysteresis = <10000>; /* millicelsius */
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type = "passive";
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};
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};
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cooling-maps {
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map0 {
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trip = <&cpu_alert0>;
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cooling-device = <&fan0 0 1>;
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};
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map1 {
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trip = <&cpu_alert1>;
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cooling-device = <&fan0 1 2>;
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};
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map2 {
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trip = <&cpu_alert2>;
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cooling-device = <&fan0 2 3>;
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};
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/*
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* When reaching cpu_alert3, reduce CPU
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* by 2 steps. On Exynos5422/5800 that would
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* be: 1500 MHz and 1100 MHz.
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*/
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map3 {
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trip = <&cpu_alert3>;
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cooling-device = <&cpu0 0 2>;
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};
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map4 {
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trip = <&cpu_alert3>;
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cooling-device = <&cpu4 0 2>;
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};
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/*
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* When reaching cpu_alert4, reduce CPU
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* further, down to 600 MHz (11 steps for big,
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* 7 steps for LITTLE).
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*/
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map5 {
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trip = <&cpu_alert4>;
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cooling-device = <&cpu0 3 7>;
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};
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map6 {
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trip = <&cpu_alert4>;
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cooling-device = <&cpu4 3 11>;
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};
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};
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};
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};
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};
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