[PATCH v15 2/5] dt-bindings: document Rockchip thermal

[Dmitry Torokhov]

On Tue, Oct 28, 2014 at 04:51:24PM +0800, Caesar Wang wrote:
> This add the necessary binding documentation for the thermal
> found on Rockchip SoCs
> 
> Signed-off-by: zhaoyifeng <zyf at rock-chips.com>
> Signed-off-by: Caesar Wang <caesar.wang at rock-chips.com>

Reviewed-by: Dmitry Torokhov <dmitry.torokhov at gmail.com>

> ---
>  .../bindings/thermal/rockchip-thermal.txt          | 62 ++++++++++++++++++++++
>  1 file changed, 62 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..fc30e1b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt
> @@ -0,0 +1,62 @@
> +* 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.
> +- hw-shut-temp : The hardware-controlled shutdown temperature value.
> +- tsadc-tshut-mode : The hardware-controlled shutdown mode 0:CRU 1:GPIO.
> +- tsadc-tshut-polarity : The hardware-controlled active polarity 0:LOW 1:HIGH.
> +
> +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";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&otp_out>;
> +	#thermal-sensor-cells = <1>;
> +	hw-shut-temp = <125000>;
> +	tsadc-tshut-mode = <0>;
> +	tsadc-tshut-polarity = <0>;
> +};
> +
> +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