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