Re: [PATCH v14 2/5] dt-bindings: document Rockchip thermal

Dmitry Torokhov
2014-10-28T00:29:21Z

On Mon, Oct 27, 2014 at 10:39:45AM +0800, Caesar Wang wrote:
> This add the necessary binding documentation for the thermal
> found on Rockchip SoCs
>
> Signed-off-by: zhaoyifeng <zyf@rock-chips.com>
> Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com>
> ---
> .../bindings/thermal/rockchip-thermal.txt | 53 ++++++++++++++++++++++
> 1 file changed, 53 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/thermal/rockchip-thermal.txt
>
> diff --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@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