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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/sound/awinic,aw8738.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Awinic AW8738 Audio Amplifier8 9maintainers:10 - Stephan Gerhold <stephan@gerhold.net>11 12description:13 The Awinic AW8738 is a simple audio amplifier with different operation modes14 (set using one-wire pulse control). The mode configures the speaker-guard15 function (primarily the power limit for the amplifier).16 17allOf:18 - $ref: dai-common.yaml#19 20properties:21 compatible:22 const: awinic,aw873823 24 mode-gpios:25 description:26 GPIO used for one-wire pulse control. The pin is typically called SHDN27 (active-low), but this is misleading since it is actually more than28 just a simple shutdown/enable control.29 maxItems: 130 31 awinic,mode:32 description: Operation mode (number of pulses for one-wire pulse control)33 $ref: /schemas/types.yaml#/definitions/uint3234 minimum: 135 maximum: 736 37 sound-name-prefix: true38 39required:40 - compatible41 - mode-gpios42 - awinic,mode43 44additionalProperties: false45 46examples:47 - |48 #include <dt-bindings/gpio/gpio.h>49 audio-amplifier {50 compatible = "awinic,aw8738";51 mode-gpios = <&msmgpio 114 GPIO_ACTIVE_HIGH>;52 awinic,mode = <5>;53 sound-name-prefix = "Speaker Amp";54 };55