1 * PWM beeper device tree bindings
3 Registers a PWM device as beeper.
6 - compatible: should be "pwm-beeper"
7 - pwms: phandle to the physical PWM device
10 - amp-supply: phandle to a regulator that acts as an amplifier for the beeper
11 - beeper-hz: bell frequency in Hz
15 beeper_amp: amplifier {
16 compatible = "fixed-regulator";
17 gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
21 compatible = "pwm-beeper";
23 amp-supply = <&beeper_amp>;