[PATCH v14 2/5] dt-bindings: document Rockchip thermal
From: dmitry.torokhov@gmail.com (Dmitry Torokhov)
Date: 2014-10-28 00:29:21
Also in:
linux-devicetree, linux-pm, lkml
On Mon, Oct 27, 2014 at 10:39:45AM +0800, Caesar Wang wrote:
quoted hunk ↗ jump to hunk
This add the necessary binding documentation for the thermal found on Rockchip SoCs Signed-off-by: zhaoyifeng <redacted> Signed-off-by: Caesar Wang <redacted> --- .../bindings/thermal/rockchip-thermal.txt | 53 ++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/rockchip-thermal.txtdiff --git a/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt new file mode 100644 index 0000000..d5b1401 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt@@ -0,0 +1,53 @@ +* Temperature Sensor ADC (TSADC) on rockchip SoCs + +Required properties: +- compatible : "rockchip,rk3288-tsadc" +- reg : physical base address of the controller and length of memory mapped + region. +- interrupts : The interrupt number to the cpu. The interrupt specifier format + depends on the interrupt controller. +- clocks : Must contain an entry for each entry in clock-names. +- clock-names : Shall be "tsadc" for the converter-clock, and "apb_pclk" for + the peripheral clock. +- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
I think you are missing description of hw-shut-temp, tsadc-tshut-mode and tsadc-tshut-polarity and optional pinctrl settings.
+
+Exiample:
+tsadc: tsadc at ff280000 {
+ compatible = "rockchip,rk3288-tsadc";
+ reg = <0xff280000 0x100>;
+ interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;
+ clock-names = "tsadc", "apb_pclk";
+};
+
+Example: referring to thermal sensors:
+thermal-zones {
+ cpu_thermal: cpu_thermal {
+ polling-delay-passive = <1000>; /* milliseconds */
+ polling-delay = <5000>; /* milliseconds */
+
+ /* sensor ID */
+ thermal-sensors = <&tsadc 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>;
+ };
+ };
+ };
+};
--
1.9.1
-- Dmitry