kernel/Documentation/devicetree/bindings/input/gpio-beeper.txt

   1 * GPIO beeper device tree bindings
   2
   3 Register a beeper connected to GPIO pin.
   4
   5 Required properties:
   6 - compatible:   Should be "gpio-beeper".
   7 - gpios:        From common gpio binding; gpio connection to beeper enable pin.
   8
   9 Example:
  10         beeper: beeper {
  11                 compatible = "gpio-beeper";
  12                 gpios = <&gpio3 23 GPIO_ACTIVE_HIGH>;
  13         };