* PWM beeper device tree bindings Registers a PWM device as beeper. Required properties: - compatible: should be "pwm-beeper" - pwms: phandle to the physical PWM device Optional properties: - amp-supply: phandle to a regulator that acts as an amplifier for the beeper - beeper-hz: bell frequency in Hz Example: beeper_amp: amplifier { compatible = "fixed-regulator"; gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>; }; beeper { compatible = "pwm-beeper"; pwms = <&pwm0>; amp-supply = <&beeper_amp>; };