[PATCH 1/2] ARM: dts: rockchip: update the thermal management on rk3288

Heiko Stübner
2015-11-30T13:13:17Z

From: Caesar Wang <wxt-TNX95d0MmH7DzftRWevZcw@public.gmane.org>

In some cases the machine radiating is very poor,sometime the temperature
is rising very quickly on heavy loading.So we need have more frequent
polling and better granularity.

Signed-off-by: Caesar Wang <wxt-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Reviewed-by: Dmitry Torokhov <dtor-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Signed-off-by: Heiko Stuebner <heiko.stuebner-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>
---
arch/arm/boot/dts/rk3288-thermal.dtsi | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/rk3288-thermal.dtsi b/arch/arm/boot/dts/rk3288-thermal.dtsi
index 3404066..651b962 100644
--- a/arch/arm/boot/dts/rk3288-thermal.dtsi
+++ b/arch/arm/boot/dts/rk3288-thermal.dtsi
@@ -52,7 +52,7 @@ reserve_thermal: reserve_thermal {
};

cpu_thermal: cpu_thermal {
- polling-delay-passive = <1000>; /* milliseconds */
+ polling-delay-passive = <100>; /* milliseconds */
polling-delay = <5000>; /* milliseconds */

thermal-sensors = <&tsadc 1>;
@@ -63,6 +63,11 @@ cpu_thermal: cpu_thermal {
hysteresis = <2000>; /* millicelsius */
type = "passive";
};
+ cpu_alert1: cpu_alert1 {
+ temperature = <75000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "passive";
+ };
cpu_crit: cpu_crit {
temperature = <90000>; /* millicelsius */
hysteresis = <2000>; /* millicelsius */
@@ -74,13 +79,18 @@ cpu_thermal: cpu_thermal {
map0 {
trip = <&cpu_alert0>;
cooling-device =
+ <&cpu0 THERMAL_NO_LIMIT 6>;
+ };
+ map1 {
+ trip = <&cpu_alert1>;
+ cooling-device =
<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
};
};
};

gpu_thermal: gpu_thermal {
- polling-delay-passive = <1000>; /* milliseconds */
+ polling-delay-passive = <100>; /* milliseconds */
polling-delay = <5000>; /* milliseconds */

thermal-sensors = <&tsadc 2>;
--
2.6.1