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authorChen-Yu Tsai <wens@csie.org>2015-03-26 05:04:49 +0800
committerKlaus Goger <klaus.goger@theobroma-systems.com>2015-07-30 18:52:53 +0200
commitff5751740327c870ccc5115a20a29de31e43d0fc (patch)
treef7e5a8fc509e9bbad78a303e1fdf26d69dfde4d6 /arch
parent807b7b184de84744e241e3fe50f0873bee8c70a2 (diff)
ARM: dts: sun6i: 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> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/boot/dts/sun6i-a31.dtsi33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi
index 1eab55f803ad..c871bf183155 100644
--- a/arch/arm/boot/dts/sun6i-a31.dtsi
+++ b/arch/arm/boot/dts/sun6i-a31.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/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 = <70000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cpu_crit: cpu_crit {
+ /* milliCelsius */
+ temperature = <100000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+ };
+ };
+
memory {
reg = <0x40000000 0x80000000>;
};