| # 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>; |
| }; |
