/* * Device tree sources for Exynos5422 thermal zone * * Copyright (c) 2015 Lukasz Majewski * Anand Moon * * 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 / { 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>; }; }; }; }; };