On Mon, Jan 26 2015 at 21:08 -0700, Narendran Rajan wrote:
Add binding documentation for the QCOM tsens device tree node
---
.../devicetree/bindings/thermal/qcom-thermal.txt | 58 ++++++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644 Documentation/devicetree/bindings/thermal/qcom-thermal.txt
This patch should go with the driver. I have not seen the actual DT
nodes for TSENS on QCOM chipsets.
Lina
diff --git a/Documentation/devicetree/bindings/thermal/qcom-thermal.txt b/Documentation/devicetree/bindings/thermal/qcom-thermal.txt
new file mode 100644
index 0000000..d2e99d6
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/qcom-thermal.txt
@@ -0,0 +1,58 @@
+* QCOM SoC Temperature Sensor (TSENS)
+
+Required properties:
+- compatible : "qcom,ipq806x-tsens"
+- interrupts : The interrupt number to the cpu. The interrupt specifier format
+ depends on the interrupt controller.
+- qcom,imem : Must contain phandle to imem syscon node
+- qcom,tsens-base : Must contain phandle to clock controller node
+- qcom,calib-offsets : Must contain offsets to primary and secondary
+ calibration data within imem
+- qcom,tsens-slopes : Must contain slope value for each of the sensors controlled
+ by this device
+- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
+
+Exiample:
+tsens: tsens-msm8960 {
+ compatible = "qcom,ipq806x-tsens";
+ interrupts = <0 178 1>;
+ qcom,imem = <&imem>;
+ qcom,tsens-base = <&gcc>;
+ qcom,calib-offsets = <0x400 0x410>;
+ qcom,tsens-slopes = <1176 1176 1154 1176 1111
+ 1132 1132 1199 1132 1199
+ 1132>;
+ #thermal-sensor-cells = <1>;
+ };
+
+Example: referring to thermal sensors:
+thermal-zones {
+ cpu_thermal: cpu_thermal {
+ polling-delay-passive = <1000>; /* milliseconds */
+ polling-delay = <5000>; /* milliseconds */
+
+ /* sensor ID */
+ thermal-sensors = <&tsens 1>;
+
+ trips {
+ cpu_alert0: cpu_alert {
+ temperature = <80000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "passive";
+ };
+ cpu_crit: cpu_crit {
+ temperature = <120000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_alert0>;
+ cooling-device =
+ <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+};
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