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Each CPU can (and does) participate in cooling down the system but the DT only captures a handful of them, normally CPU0, in the cooling maps. Things work by chance currently as under normal circumstances its the first CPU of each cluster which is used by the operating systems to probe the cooling devices. But as soon as this CPU ordering changes and any other CPU is used to bring up the cooling device, we will start seeing failures. Also the DT is rather incomplete when we list only one CPU in the cooling maps, as the hardware doesn't have any such limitations. Update cooling maps to include all devices affected by individual trip points. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
235 lines
4.8 KiB
Plaintext
235 lines
4.8 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/*
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* Hardkernel Odroid HC1 board device tree source
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*
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* Copyright (c) 2017 Marek Szyprowski
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* Copyright (c) 2017 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*/
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/dts-v1/;
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#include "exynos5422-odroid-core.dtsi"
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/ {
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model = "Hardkernel Odroid HC1";
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compatible = "hardkernel,odroid-hc1", "samsung,exynos5800", \
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"samsung,exynos5";
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pwmleds {
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compatible = "pwm-leds";
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blueled {
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label = "blue:heartbeat";
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pwms = <&pwm 2 2000000 0>;
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pwm-names = "pwm2";
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max_brightness = <255>;
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linux,default-trigger = "heartbeat";
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};
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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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trips {
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cpu0_alert0: cpu-alert-0 {
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temperature = <70000>; /* millicelsius */
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hysteresis = <10000>; /* millicelsius */
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type = "active";
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};
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cpu0_alert1: cpu-alert-1 {
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temperature = <85000>; /* millicelsius */
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hysteresis = <10000>; /* millicelsius */
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type = "active";
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};
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cpu0_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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cooling-maps {
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/*
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* When reaching cpu0_alert0, reduce CPU
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* by 2 steps. On Exynos5422/5800 that would
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* be: 1600 MHz and 1100 MHz.
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*/
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map0 {
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trip = <&cpu0_alert0>;
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cooling-device = <&cpu0 0 2>,
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<&cpu1 0 2>,
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<&cpu2 0 2>,
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<&cpu3 0 2>,
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<&cpu4 0 2>,
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<&cpu5 0 2>,
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<&cpu6 0 2>,
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<&cpu7 0 2>;
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};
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/*
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* When reaching cpu0_alert1, reduce CPU
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* further, down to 600 MHz (12 steps for big,
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* 7 steps for LITTLE).
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*/
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map1 {
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trip = <&cpu0_alert1>;
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cooling-device = <&cpu0 3 7>,
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<&cpu1 3 7>,
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<&cpu2 3 7>,
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<&cpu3 3 7>,
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<&cpu4 3 12>,
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<&cpu5 3 12>,
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<&cpu6 3 12>,
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<&cpu7 3 12>;
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};
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};
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};
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cpu1_thermal: cpu1-thermal {
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thermal-sensors = <&tmu_cpu1 0>;
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trips {
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cpu1_alert0: cpu-alert-0 {
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temperature = <70000>;
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hysteresis = <10000>;
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type = "active";
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};
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cpu1_alert1: cpu-alert-1 {
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temperature = <85000>;
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hysteresis = <10000>;
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type = "active";
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};
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cpu1_crit0: cpu-crit-0 {
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temperature = <120000>;
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hysteresis = <0>;
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type = "critical";
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};
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};
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cooling-maps {
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map0 {
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trip = <&cpu1_alert0>;
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cooling-device = <&cpu0 0 2>,
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<&cpu1 0 2>,
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<&cpu2 0 2>,
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<&cpu3 0 2>,
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<&cpu4 0 2>,
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<&cpu5 0 2>,
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<&cpu6 0 2>,
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<&cpu7 0 2>;
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};
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map1 {
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trip = <&cpu1_alert1>;
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cooling-device = <&cpu0 3 7>,
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<&cpu1 3 7>,
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<&cpu2 3 7>,
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<&cpu3 3 7>,
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<&cpu4 3 12>,
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<&cpu5 3 12>,
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<&cpu6 3 12>,
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<&cpu7 3 12>;
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};
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};
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};
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cpu2_thermal: cpu2-thermal {
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thermal-sensors = <&tmu_cpu2 0>;
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trips {
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cpu2_alert0: cpu-alert-0 {
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temperature = <70000>;
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hysteresis = <10000>;
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type = "active";
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};
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cpu2_alert1: cpu-alert-1 {
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temperature = <85000>;
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hysteresis = <10000>;
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type = "active";
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};
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cpu2_crit0: cpu-crit-0 {
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temperature = <120000>;
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hysteresis = <0>;
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type = "critical";
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};
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};
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cooling-maps {
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map0 {
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trip = <&cpu2_alert0>;
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cooling-device = <&cpu0 0 2>,
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<&cpu1 0 2>,
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<&cpu2 0 2>,
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<&cpu3 0 2>,
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<&cpu4 0 2>,
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<&cpu5 0 2>,
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<&cpu6 0 2>,
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<&cpu7 0 2>;
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};
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map1 {
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trip = <&cpu2_alert1>;
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cooling-device = <&cpu0 3 7>,
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<&cpu1 3 7>,
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<&cpu2 3 7>,
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<&cpu3 3 7>,
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<&cpu4 3 12>,
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<&cpu5 3 12>,
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<&cpu6 3 12>,
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<&cpu7 3 12>;
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};
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};
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};
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cpu3_thermal: cpu3-thermal {
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thermal-sensors = <&tmu_cpu3 0>;
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trips {
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cpu3_alert0: cpu-alert-0 {
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temperature = <70000>;
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hysteresis = <10000>;
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type = "active";
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};
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cpu3_alert1: cpu-alert-1 {
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temperature = <85000>;
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hysteresis = <10000>;
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type = "active";
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};
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cpu3_crit0: cpu-crit-0 {
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temperature = <120000>;
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hysteresis = <0>;
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type = "critical";
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};
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};
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cooling-maps {
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map0 {
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trip = <&cpu3_alert0>;
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cooling-device = <&cpu0 0 2>,
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<&cpu1 0 2>,
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<&cpu2 0 2>,
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<&cpu3 0 2>,
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<&cpu4 0 2>,
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<&cpu5 0 2>,
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<&cpu6 0 2>,
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<&cpu7 0 2>;
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};
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map1 {
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trip = <&cpu3_alert1>;
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cooling-device = <&cpu0 3 7>,
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<&cpu1 3 7>,
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<&cpu2 3 7>,
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<&cpu3 3 7>,
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<&cpu4 3 12>,
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<&cpu5 3 12>,
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<&cpu6 3 12>,
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<&cpu7 3 12>;
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};
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};
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};
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};
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};
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&pwm {
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/*
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* PWM 2 -- Blue LED
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*/
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pinctrl-0 = <&pwm2_out>;
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pinctrl-names = "default";
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samsung,pwm-outputs = <2>;
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status = "okay";
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};
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&usbdrd_dwc3_1 {
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dr_mode = "host";
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};
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