On Fri 2017-07-14 12:01:49, Sebastian Reichel wrote: > Add DT binding document for PWM controlled vibrator devices. > > Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx> Acked-by: Pavel Machek <pavel@xxxxxx> > index 000000000000..09145d18491d > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/pwm-vibrator.txt > @@ -0,0 +1,66 @@ > +* PWM vibrator device tree bindings > + > +Registers a PWM device as vibrator. It is expected, that the vibrator's > +strength increases based on the duty cycle of the enable PWM channel > +(100% duty cycle meaning strongest vibration, 0% meaning no vibration). > + > +The binding supports an optional direction PWM channel, that can be > +driven at fixed duty cycle. If available this is can be used to increase > +the vibration effect of some devices. Actually what "direction" does would be nice to explain, because I don't know. Does it make the motor turn the other way around? > +Required properties: > +- compatible: should contain "pwm-vibrator" should->Should. > +- pwm-names: Should contain "enable" and optionally "direction" > +- pwms: Should contain a PWM handle for each entry in pwm-names > + > +Optional properties: > +- vcc-supply: Phandle for the regulator supplying power > +- direction-duty-cycle-ns: Duty cycle of the direction PWM channel in > + nanoseconds, defaults to 50% of the channel's > + period. Is nanoseconds right unit here? It drives a motor... Thanks, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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