Re: [PATCH] dt-bindings: document qcom tsens thermal

[Lina Iyer <lina.iyer@linaro.org>]

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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