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
7 title: Awinic AW8738 Audio Amplifier
8
9 maintainers:
10 - Stephan Gerhold <stephan@gerhold.net>
11
12 description:
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
17 allOf:
18 - $ref: dai-common.yaml#
19
20 properties:
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
39 required:
40 - compatible
41 - mode-gpios
42 - awinic,mode
43
44 additionalProperties: false
45
46 examples:
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 };
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