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| author | Quentin Schulz <quentin.schulz@free-electrons.com> | 2017-04-05 11:06:32 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-04-05 14:07:52 +0200 |
| commit | a5ce7a3d44a2e0d88dfe2b870331ec7c5c2d3080 (patch) | |
| tree | 42c2e03797e954d92f12fa8d62b4cb51119662d0 /arch/arm/boot/dts/sun8i-a33.dtsi | |
| parent | ARM: sun8i: a33: add thermal sensor (diff) | |
| download | linux-a5ce7a3d44a2e0d88dfe2b870331ec7c5c2d3080.tar.xz linux-a5ce7a3d44a2e0d88dfe2b870331ec7c5c2d3080.zip | |
ARM: sun8i: a33: add CPU thermal throttling
This adds CPU thermal throttling for the Allwinner A33. It uses the
thermal sensor present in the SoC's GPADC.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch/arm/boot/dts/sun8i-a33.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/sun8i-a33.dtsi | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi index 0ee3e18659cf..2bf36d86a00f 100644 --- a/arch/arm/boot/dts/sun8i-a33.dtsi +++ b/arch/arm/boot/dts/sun8i-a33.dtsi @@ -43,6 +43,7 @@ */ #include "sun8i-a23-a33.dtsi" +#include <dt-bindings/thermal/thermal.h> / { cpu0_opp_table: opp_table0 { @@ -133,6 +134,7 @@ clocks = <&ccu CLK_CPUX>; clock-names = "cpu"; operating-points-v2 = <&cpu0_opp_table>; + #cooling-cells = <2>; }; cpu@2 { @@ -388,6 +390,49 @@ }; }; }; + + thermal-zones { + cpu_thermal { + /* milliseconds */ + polling-delay-passive = <250>; + polling-delay = <1000>; + thermal-sensors = <&ths>; + + cooling-maps { + map0 { + trip = <&cpu_alert0>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + map1 { + trip = <&cpu_alert1>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + + trips { + cpu_alert0: cpu_alert0 { + /* milliCelsius */ + temperature = <75000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_alert1: cpu_alert1 { + /* milliCelsius */ + temperature = <90000>; + hysteresis = <2000>; + type = "hot"; + }; + + cpu_crit: cpu_crit { + /* milliCelsius */ + temperature = <110000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + }; + }; }; &ccu { |