Kernel-4.18.0-80.el8_pwm-beeper

• 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>;
};