> > Thanks for adding a comment. So you need something like a PWM driving > > it? Have you tried playing with drivers/input/misc/pwm-beeper.c ? > > It use a PWM device. Driver gpio-pwm isn't accepted in mainline so far. > > > Some of the mvebu family have a simple PWM functionality as part of > > the GPIO controller. I don't remember if kirkwood has this. > > Kirkwood have very simple blink mode only: GPIO pin make visible blinks. [Goes and looks at the datasheet] Yes, Kirkwood has fixed rate blinking. It is the later generation of devices which have true PWM capabilities. Andrew
