[PATCH v3 6/9] ARM: dts: sun5i: Add cpu thermal zones to dtsi
Chen-Yu Tsai
wens at csie.org
Sun Jan 11 20:34:06 PST 2015
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 at csie.org>
Acked-by: Eduardo Valentin <edubezval at gmail.com>
---
changes since v2:
- Added Acked-by from Eduardo
changes since v1:
- Use thermal dt bindings macros in cooling-device
---
arch/arm/boot/dts/sun5i-a13.dtsi | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
index dee2aa5bc9ed..c26f58ea0850 100644
--- a/arch/arm/boot/dts/sun5i-a13.dtsi
+++ b/arch/arm/boot/dts/sun5i-a13.dtsi
@@ -13,6 +13,8 @@
#include "skeleton.dtsi"
+#include <dt-bindings/thermal/thermal.h>
+
#include <dt-bindings/dma/sun4i-a10.h>
#include <dt-bindings/pinctrl/sun4i-a10.h>
@@ -50,6 +52,38 @@
};
};
+ 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 = <850000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cpu_crit: cpu_crit {
+ /* milliCelsius */
+ temperature = <100000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+ };
+ };
+
memory {
reg = <0x40000000 0x20000000>;
};
--
2.1.4
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