On Sat, Nov 18, 2017 at 12:36:08PM -0200, Fabio Estevam wrote: > In some systems it is desirable to keep the PWM active during system > suspend. > > One use case is the imx6q-cubox-i board, which has an LED driven by PWM. > When the system goes into suspend the PWM block is disabled by default, > the PWM pin goes to zero and turn on the LED during suspend, which is > not really the behaviour we want to see. Seems to me the default behavior should be LEDs are off in suspend and you'd add a property to enable them if desired. You problem to me sounds like something that should be fixed in the pwm and/or pwm-led drivers. > > By keeping the PWM enabled during suspend the pwm-leds driver sets > the brightness to zero in suspend and then the LED is turned off as > expected. > > Introduce the 'fsl,active-in-suspend' property to indicate that the > PWM will stay active during suspend. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
