On Mon, Dec 22, 2014 at 05:27:43PM +0100, Lukasz Majewski wrote: > Several new properties to allow PWM fan working as a cooling device have been > combined into this single commit. >
Patch prefix should look something like 'dt-bindings: ...', or better 'Documentation: devicetree: ...', or 'Documentation: bindings: ...' > Signed-off-by: Lukasz Majewski <[email protected]> > --- > Changes for v2: > - Rename cooling-pwm-values to cooling-levels > - Remove default-pulse-width property and stick to default hwmon policy > --- > .../devicetree/bindings/hwmon/pwm-fan.txt | 23 > ++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt > b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt > index 610757c..001446a 100644 > --- a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt > +++ b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt > @@ -3,10 +3,33 @@ Bindings for a fan connected to the PWM lines > Required properties: > - compatible : "pwm-fan" > - pwms : the PWM that is used to control the PWM fan > +- cooling-levels : PWM duty cycle values in a range from 0 to 255 > + which correspond to thermal cooling states > + > +Thorough description of the following bindings: > + cooling-min-state = <0>; > + cooling-max-state = <3>; > + #cooling-cells = <2>; > + thermal-zone { > + cpu_thermal: cpu-thermal { > + cooling-maps { > + map0 { > + trip = <&cpu_alert1>; > + cooling-device = <&fan0 0 1>; > + }; > + }; > + }; > + > +for PWM FAN used as cooling device can be found at: > +./Documentation/devicetree/bindings/thermal/thermal.txt > > Example: > pwm-fan { > compatible = "pwm-fan"; > status = "okay"; > pwms = <&pwm 0 10000 0>; > + cooling-min-state = <0>; > + cooling-max-state = <3>; > + #cooling-cells = <2>; > + cooling-levels = <0 102 170 255>; > }; > -- > 2.0.0.rc2 >
signature.asc
Description: Digital signature
