diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2015-01-12 12:34:03 +0800 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2015-01-21 09:59:09 +0100 |
| commit | b6d34248b8485ef5dc51952bd5e72ca2b9226ff0 (patch) | |
| tree | f8588213f786b85c7044a5f2b1e08a6d830d3887 /arch/arm/boot/dts/sun7i-a20.dtsi | |
| parent | ddfd0232ede34e673fe338d1e5a7ec7aa022aa99 (diff) | |
ARM: dts: sun7i: Add cpu thermal zones to dtsi
The core temperature sensor now supports thermal zones. Add a thermal
zone mapping for the cpus with passive cooling (cpufreq throttling).
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch/arm/boot/dts/sun7i-a20.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/sun7i-a20.dtsi | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi index beb0b7f6464c..929630aee299 100644 --- a/arch/arm/boot/dts/sun7i-a20.dtsi +++ b/arch/arm/boot/dts/sun7i-a20.dtsi @@ -50,6 +50,7 @@ #include "skeleton.dtsi" #include <dt-bindings/interrupt-controller/arm-gic.h> +#include <dt-bindings/thermal/thermal.h> #include <dt-bindings/dma/sun4i-a10.h> #include <dt-bindings/pinctrl/sun4i-a10.h> @@ -133,6 +134,38 @@ }; }; + thermal-zones { + cpu_thermal { + /* milliseconds */ + polling-delay-passive = <250>; + polling-delay = <1000>; + thermal-sensors = <&rtp>; + + cooling-maps { + map0 { + trip = <&cpu_alert0>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + + trips { + cpu_alert0: cpu_alert0 { + /* milliCelsius */ + temperature = <75000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_crit: cpu_crit { + /* milliCelsius */ + temperature = <100000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + }; + }; + memory { reg = <0x40000000 0x80000000>; }; |