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Date: Wed, 18 Jan 2017 12:42:00 +0800
From: Baoyou Xie <baoyou.xie@...aro.org>
To: jun.nie@...aro.org, rui.zhang@...el.com, edubezval@...il.com,
robh+dt@...nel.org, mark.rutland@....com
Cc: linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
shawnguo@...nel.org, baoyou.xie@...aro.org, xie.baoyou@....com.cn,
chen.chaokai@....com.cn, wang.qiang01@....com.cn
Subject: [PATCH v5 1/3] dt: bindings: add documentation for zx2967 family thermal sensor
This patch adds dt-binding documentation for zx2967 family thermal sensor.
Signed-off-by: Baoyou Xie <baoyou.xie@...aro.org>
Acked-by: Rob Herring <robh@...nel.org>
Reviewed-by: Shawn Guo <shawnguo@...nel.org>
---
.../devicetree/bindings/thermal/zx2967-thermal.txt | 109 +++++++++++++++++++++
1 file changed, 109 insertions(+)
create mode 100644 Documentation/devicetree/bindings/thermal/zx2967-thermal.txt
diff --git a/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt b/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt
new file mode 100644
index 0000000..a96c8b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt
@@ -0,0 +1,109 @@
+* ZTE zx2967 family Thermal
+
+Required Properties:
+- compatible: should be one of the following.
+ * zte,zx296718-thermal
+- reg: physical base address of the controller and length of memory mapped
+ region.
+- clocks : Pairs of phandle and specifier referencing the controller's clocks.
+- clock-names: "gate" for the topcrm clock.
+ "pclk" for the apb clock.
+- #thermal-sensor-cells: must be 0.
+
+Example for tempsensor:
+
+ tempsensor: tempsensor@...a000 {
+ compatible = "zte,zx296718-thermal";
+ reg = <0x0148a000 0x20>;
+ clocks = <&topcrm TEMPSENSOR_GATE>, <&audiocrm AUDIO_TS_PCLK>;
+ clock-names = "gate", "pclk";
+ #thermal-sensor-cells = <0>;
+ };
+
+Example for cooling device:
+
+ cooling_dev: cooling_dev {
+ cluster0_cooling_dev: cluster0-cooling-dev {
+ #cooling-cells = <2>;
+ cpumask = <0xf>;
+ capacitance = <1500>;
+ };
+
+ cluster1_cooling_dev: cluster1-cooling-dev {
+ #cooling-cells = <2>;
+ cpumask = <0x30>;
+ capacitance = <2000>;
+ };
+ };
+
+Example for thermal zones:
+
+ thermal-zones {
+ zx296718_thermal: zx296718_thermal {
+ polling-delay-passive = <500>;
+ polling-delay = <1000>;
+ sustainable-power = <6500>;
+
+ thermal-sensors = <&tempsensor 0>;
+
+ trips {
+ trip0: switch_on_temperature {
+ temperature = <90000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ trip1: desired_temperature {
+ temperature = <100000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ crit: critical_temperature {
+ temperature = <110000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&trip0>;
+ cooling-device = <&gpu 2 5>;
+ };
+
+ map1 {
+ trip = <&trip0>;
+ cooling-device = <&cluster0_cooling_dev 1 2>;
+ };
+
+ map2 {
+ trip = <&trip1>;
+ cooling-device = <&cluster0_cooling_dev 1 2>;
+ };
+
+ map3 {
+ trip = <&crit>;
+ cooling-device = <&cluster0_cooling_dev 1 2>;
+ };
+
+ map4 {
+ trip = <&trip0>;
+ cooling-device = <&cluster1_cooling_dev 1 2>;
+ contribution = <9000>;
+ };
+
+ map5 {
+ trip = <&trip1>;
+ cooling-device = <&cluster1_cooling_dev 1 2>;
+ contribution = <4096>;
+ };
+
+ map6 {
+ trip = <&crit>;
+ cooling-device = <&cluster1_cooling_dev 1 2>;
+ contribution = <4096>;
+ };
+ };
+ };
+ };
--
2.7.4
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