# 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 <[email protected]>
description: |
The QMC audio is an ASoC component which uses QMC (QUICC Multichannel
Controller) channels to transfer the audio data.
It provides several DAIs. For each DAI, the DAI is working in interleaved mode
if only one QMC channel is used by the DAI or it is working in non-interleaved
mode if several QMC channels are used by the DAI.
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
minItems: 1
description:
Should be a phandle/number pair list. The list of phandle to QMC node
and the QMC channel pair to use for this DAI.
If only one phandle/number pair is provided, this DAI works in
interleaved mode, i.e. audio channels for this DAI are interleaved in
the QMC channel. If more than one pair is provided, this DAI works
in non-interleave mode. In that case the first audio channel uses the
the first QMC channel, the second audio channel uses the second QMC
channel, etc...
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>;
};
dai@18 {
reg = <18>;
/* Non-interleaved mode */
fsl,qmc-chan = <&qmc 18>, <&qmc 19>;
};
};
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>;
};
};
simple-audio-card,dai-link@2 {
reg = <2>;
format = "dsp_b";
cpu {
sound-dai = <&audio_controller 18>;
};
codec {
sound-dai = <&codec3>;
dai-tdm-slot-num = <2>;
dai-tdm-slot-width = <8>;
/* TS 9, 10 */
dai-tdm-slot-tx-mask = <0 0 0 0 0 0 0 0 0 1 1>;
dai-tdm-slot-rx-mask = <0 0 0 0 0 0 0 0 0 1 1>;
};
};
};
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