1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/sound/awinic,aw8738.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Awinic AW8738 Audio Amplifier 8 9maintainers: 10 - Stephan Gerhold <stephan@gerhold.net> 11 12description: 13 The Awinic AW8738 is a simple audio amplifier with different operation modes 14 (set using one-wire pulse control). The mode configures the speaker-guard 15 function (primarily the power limit for the amplifier). 16 17allOf: 18 - $ref: dai-common.yaml# 19 20properties: 21 compatible: 22 const: awinic,aw8738 23 24 mode-gpios: 25 description: 26 GPIO used for one-wire pulse control. The pin is typically called SHDN 27 (active-low), but this is misleading since it is actually more than 28 just a simple shutdown/enable control. 29 maxItems: 1 30 31 awinic,mode: 32 description: Operation mode (number of pulses for one-wire pulse control) 33 $ref: /schemas/types.yaml#/definitions/uint32 34 minimum: 1 35 maximum: 7 36 37 sound-name-prefix: true 38 39required: 40 - compatible 41 - mode-gpios 42 - awinic,mode 43 44additionalProperties: false 45 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