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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>
properties:
compatible:
enum:
- fsl,imx-audio-card
model:
$ref: /schemas/types.yaml#/definitions/string
description: User specified audio sound card name
audio-routing:
$ref: /schemas/types.yaml#/definitions/non-unique-string-array
description:
A list of the connections between audio components. Each entry is a
pair of strings, the first being the connection's sink, the second
being the connection's source. Valid names could be power supplies,
MicBias of codec and the jacks on the board.
patternProperties:
".*-dai-link$":
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
- model
additionalProperties: 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>;
};
};
};
|
