1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/sound/audio-iio-aux.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Audio IIO auxiliary 8 9maintainers: 10 - Herve Codina <herve.codina@bootlin.com> 11 12description: 13 Auxiliary device based on Industrial I/O device channels 14 15allOf: 16 - $ref: dai-common.yaml# 17 18properties: 19 compatible: 20 const: audio-iio-aux 21 22 io-channels: 23 description: 24 Industrial I/O device channels used 25 26 io-channel-names: 27 description: 28 Industrial I/O channel names related to io-channels. 29 These names are used to provides sound controls, widgets and routes names. 30 31 snd-control-invert-range: 32 $ref: /schemas/types.yaml#/definitions/uint32-array 33 description: | 34 A list of 0/1 flags defining whether or not the related channel is 35 inverted 36 items: 37 enum: [0, 1] 38 default: 0 39 description: | 40 Invert the sound control value compared to the IIO channel raw value. 41 - 1: The related sound control value is inverted meaning that the 42 minimum sound control value correspond to the maximum IIO channel 43 raw value and the maximum sound control value correspond to the 44 minimum IIO channel raw value. 45 - 0: The related sound control value is not inverted meaning that the 46 minimum (resp maximum) sound control value correspond to the 47 minimum (resp maximum) IIO channel raw value. 48 49required: 50 - compatible 51 - io-channels 52 - io-channel-names 53 54unevaluatedProperties: false 55 56examples: 57 - | 58 iio-aux { 59 compatible = "audio-iio-aux"; 60 io-channels = <&iio 0>, <&iio 1>, <&iio 2>, <&iio 3>; 61 io-channel-names = "CH0", "CH1", "CH2", "CH3"; 62 /* Invert CH1 and CH2 */ 63 snd-control-invert-range = <0 1 1 0>; 64 }; 65