tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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};