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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/imx-audio-card.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP i.MX audio sound card.
maintainers:
- Shengjiu Wang <shengjiu.wang@nxp.com>
allOf:
- $ref: sound-card-common.yaml#
properties:
compatible:
enum:
- fsl,imx-audio-card
patternProperties:
".*-dai-link$":
description:
Each subnode represents a dai link. Subnodes of each dai links would be
cpu/codec dais.
type: object
properties:
link-name:
description: Indicates dai-link name and PCM stream name.
$ref: /schemas/types.yaml#/definitions/string
maxItems: 1
format:
description: audio format.
items:
enum:
- i2s
- dsp_b
dai-tdm-slot-num:
description: see tdm-slot.txt.
$ref: /schemas/types.yaml#/definitions/uint32
dai-tdm-slot-width:
description: see tdm-slot.txt.
$ref: /schemas/types.yaml#/definitions/uint32
cpu:
description: Holds subnode which indicates cpu dai.
type: object
additionalProperties: false
properties:
sound-dai:
maxItems: 1
codec:
description: Holds subnode which indicates codec dai.
type: object
additionalProperties: false
properties:
sound-dai:
minItems: 1
maxItems: 2
fsl,mclk-equal-bclk:
description: Indicates mclk can be equal to bclk, especially for sai interface
$ref: /schemas/types.yaml#/definitions/flag
required:
- link-name
- cpu
additionalProperties: false
required:
- compatible
unevaluatedProperties: false
examples:
- |
sound-ak4458 {
compatible = "fsl,imx-audio-card";
model = "ak4458-audio";
pri-dai-link {
link-name = "akcodec";
format = "i2s";
fsl,mclk-equal-bclk;
cpu {
sound-dai = <&sai1>;
};
codec {
sound-dai = <&ak4458_1>, <&ak4458_2>;
};
};
fe-dai-link {
link-name = "HiFi-ASRC-FE";
format = "i2s";
cpu {
sound-dai = <&easrc>;
};
};
be-dai-link {
link-name = "HiFi-ASRC-BE";
format = "dsp_b";
dai-tdm-slot-num = <8>;
dai-tdm-slot-width = <32>;
fsl,mclk-equal-bclk;
cpu {
sound-dai = <&sai1>;
};
codec {
sound-dai = <&ak4458_1>, <&ak4458_2>;
};
};
};
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