xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: dts: exynos: Add all CPUs in cooling maps

Browse Source 
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>
This commit is contained in:
Viresh Kumar
2018-11-16 15:31:10 +05:30
committed by Krzysztof Kozlowski
parent 6e2422ff94
commit 670734f558
13 changed files with 178 additions and 113 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/arm/boot/dts/exynos4412-odroidu3.dts
View File

@@ -45,24 +45,22 @@
cooling-maps {
map0 {
trip = <&cpu_alert1>;
cooling-device = <&cpu0 9 9>;
cooling-device = <&cpu0 9 9>, <&cpu1 9 9>,
<&cpu2 9 9>, <&cpu3 9 9>,
<&fan0 1 2>;
};
map1 {
trip = <&cpu_alert2>;
cooling-device = <&cpu0 15 15>;
cooling-device = <&cpu0 15 15>,
<&cpu1 15 15>,
<&cpu2 15 15>,
<&cpu3 15 15>,
<&fan0 2 3>;
};
map2 {
trip = <&cpu_alert0>;
cooling-device = <&fan0 0 1>;
};
map3 {
trip = <&cpu_alert1>;
cooling-device = <&fan0 1 2>;
};
map4 {
trip = <&cpu_alert2>;
cooling-device = <&fan0 2 3>;
};
};
};
};