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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/fsl,qmc-audio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: QMC audio
maintainers:
- Herve Codina <herve.codina@bootlin.com>
description: |
The QMC audio is an ASoC component which uses QMC (QUICC Multichannel
Controller) channels to transfer the audio data.
It provides as many DAI as the number of QMC channel used.
allOf:
- $ref: dai-common.yaml#
properties:
compatible:
const: fsl,qmc-audio
'#address-cells':
const: 1
'#size-cells':
const: 0
'#sound-dai-cells':
const: 1
patternProperties:
'^dai@([0-9]|[1-5][0-9]|6[0-3])$':
description:
A DAI managed by this controller
type: object
additionalProperties: false
properties:
reg:
minimum: 0
maximum: 63
description:
The DAI number
fsl,qmc-chan:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: phandle to QMC node
- description: Channel number
description:
Should be a phandle/number pair. The phandle to QMC node and the QMC
channel to use for this DAI.
required:
- reg
- fsl,qmc-chan
required:
- compatible
- '#address-cells'
- '#size-cells'
- '#sound-dai-cells'
additionalProperties: false
examples:
- |
audio_controller: audio-controller {
compatible = "fsl,qmc-audio";
#address-cells = <1>;
#size-cells = <0>;
#sound-dai-cells = <1>;
dai@16 {
reg = <16>;
fsl,qmc-chan = <&qmc 16>;
};
dai@17 {
reg = <17>;
fsl,qmc-chan = <&qmc 17>;
};
};
sound {
compatible = "simple-audio-card";
#address-cells = <1>;
#size-cells = <0>;
simple-audio-card,dai-link@0 {
reg = <0>;
format = "dsp_b";
cpu {
sound-dai = <&audio_controller 16>;
};
codec {
sound-dai = <&codec1>;
dai-tdm-slot-num = <4>;
dai-tdm-slot-width = <8>;
/* TS 3, 5, 7, 9 */
dai-tdm-slot-tx-mask = <0 0 0 1 0 1 0 1 0 1>;
dai-tdm-slot-rx-mask = <0 0 0 1 0 1 0 1 0 1>;
};
};
simple-audio-card,dai-link@1 {
reg = <1>;
format = "dsp_b";
cpu {
sound-dai = <&audio_controller 17>;
};
codec {
sound-dai = <&codec2>;
dai-tdm-slot-num = <4>;
dai-tdm-slot-width = <8>;
/* TS 2, 4, 6, 8 */
dai-tdm-slot-tx-mask = <0 0 1 0 1 0 1 0 1>;
dai-tdm-slot-rx-mask = <0 0 1 0 1 0 1 0 1>;
};
};
};
|
