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

[Caesar Wang]

在 2014年10月29日 07:46, Dmitry Torokhov 写道:
> 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>

Added.

Thank you!
>
>> ---
>>   .../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
>>
>>

-- 
Best regards,
Caesar