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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/audio-iio-aux.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Audio IIO auxiliary
maintainers:
- Herve Codina <herve.codina@bootlin.com>
description:
Auxiliary device based on Industrial I/O device channels
allOf:
- $ref: dai-common.yaml#
properties:
compatible:
const: audio-iio-aux
io-channels:
description:
Industrial I/O device channels used
io-channel-names:
description:
Industrial I/O channel names related to io-channels.
These names are used to provides sound controls, widgets and routes names.
snd-control-invert-range:
$ref: /schemas/types.yaml#/definitions/uint32-array
description: |
A list of 0/1 flags defining whether or not the related channel is
inverted
items:
enum: [0, 1]
default: 0
description: |
Invert the sound control value compared to the IIO channel raw value.
- 1: The related sound control value is inverted meaning that the
minimum sound control value correspond to the maximum IIO channel
raw value and the maximum sound control value correspond to the
minimum IIO channel raw value.
- 0: The related sound control value is not inverted meaning that the
minimum (resp maximum) sound control value correspond to the
minimum (resp maximum) IIO channel raw value.
required:
- compatible
- io-channels
- io-channel-names
unevaluatedProperties: false
examples:
- |
iio-aux {
compatible = "audio-iio-aux";
io-channels = <&iio 0>, <&iio 1>, <&iio 2>, <&iio 3>;
io-channel-names = "CH0", "CH1", "CH2", "CH3";
/* Invert CH1 and CH2 */
snd-control-invert-range = <0 1 1 0>;
};
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