1* PWM beeper device tree bindings 2 3Registers a PWM device as beeper. 4 5Required properties: 6- compatible: should be "pwm-beeper" 7- pwms: phandle to the physical PWM device 8 9Optional properties: 10- amp-supply: phandle to a regulator that acts as an amplifier for the beeper 11- beeper-hz: bell frequency in Hz 12 13Example: 14 15beeper_amp: amplifier { 16 compatible = "fixed-regulator"; 17 gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>; 18}; 19 20beeper { 21 compatible = "pwm-beeper"; 22 pwms = <&pwm0>; 23 amp-supply = <&beeper_amp>; 24}; 25