xref: /linux/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml (revision 7f4f3b14e8079ecde096bd734af10e30d40c27b7) 
1# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/simple-audio-mux.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Simple Audio Multiplexer
8
9maintainers:
10  - Alexandre Belloni <aleandre.belloni@bootlin.com>
11
12description: |
13  Simple audio multiplexers are driven using gpios, allowing to select which of
14  their input line is connected to the output line.
15
16allOf:
17  - $ref: dai-common.yaml#
18
19properties:
20  compatible:
21    const: simple-audio-mux
22
23  mux-gpios:
24    description: |
25      GPIOs used to select the input line.
26
27  state-labels:
28    description: State of input line. default is "Input 1", "Input 2"
29    $ref: /schemas/types.yaml#/definitions/string-array
30    maxItems: 2
31
32  idle-state:
33    description: If present specifies the state when the mux is powered down
34    $ref: /schemas/mux/mux-controller.yaml#/properties/idle-state
35
36  sound-name-prefix: true
37
38required:
39  - compatible
40  - mux-gpios
41
42additionalProperties: false
43
44examples:
45  - |
46    mux {
47        compatible = "simple-audio-mux";
48        mux-gpios = <&gpio 3 0>;
49        state-labels = "Label_A", "Label_B";
50        idle-state = <0>;
51    };
52