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