tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/imx-audio-card.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NXP i.MX audio sound card.
8
9maintainers:
10 - Shengjiu Wang <shengjiu.wang@nxp.com>
11
12properties:
13 compatible:
14 enum:
15 - fsl,imx-audio-card
16
17 model:
18 $ref: /schemas/types.yaml#/definitions/string
19 description: User specified audio sound card name
20
21 audio-routing:
22 $ref: /schemas/types.yaml#/definitions/non-unique-string-array
23 description:
24 A list of the connections between audio components. Each entry is a
25 pair of strings, the first being the connection's sink, the second
26 being the connection's source. Valid names could be power supplies,
27 MicBias of codec and the jacks on the board.
28
29patternProperties:
30 ".*-dai-link$":
31 description:
32 Each subnode represents a dai link. Subnodes of each dai links would be
33 cpu/codec dais.
34
35 type: object
36
37 properties:
38 link-name:
39 description: Indicates dai-link name and PCM stream name.
40 $ref: /schemas/types.yaml#/definitions/string
41 maxItems: 1
42
43 format:
44 description: audio format.
45 items:
46 enum:
47 - i2s
48 - dsp_b
49
50 dai-tdm-slot-num:
51 description: see tdm-slot.txt.
52 $ref: /schemas/types.yaml#/definitions/uint32
53
54 dai-tdm-slot-width:
55 description: see tdm-slot.txt.
56 $ref: /schemas/types.yaml#/definitions/uint32
57
58 cpu:
59 description: Holds subnode which indicates cpu dai.
60 type: object
61 additionalProperties: false
62 properties:
63 sound-dai:
64 maxItems: 1
65
66 codec:
67 description: Holds subnode which indicates codec dai.
68 type: object
69 additionalProperties: false
70 properties:
71 sound-dai:
72 minItems: 1
73 maxItems: 2
74
75 fsl,mclk-equal-bclk:
76 description: Indicates mclk can be equal to bclk, especially for sai interface
77 $ref: /schemas/types.yaml#/definitions/flag
78
79 required:
80 - link-name
81 - cpu
82
83 additionalProperties: false
84
85required:
86 - compatible
87 - model
88
89additionalProperties: false
90
91examples:
92 - |
93 sound-ak4458 {
94 compatible = "fsl,imx-audio-card";
95 model = "ak4458-audio";
96 pri-dai-link {
97 link-name = "akcodec";
98 format = "i2s";
99 fsl,mclk-equal-bclk;
100 cpu {
101 sound-dai = <&sai1>;
102 };
103 codec {
104 sound-dai = <&ak4458_1>, <&ak4458_2>;
105 };
106 };
107 fe-dai-link {
108 link-name = "HiFi-ASRC-FE";
109 format = "i2s";
110 cpu {
111 sound-dai = <&easrc>;
112 };
113 };
114 be-dai-link {
115 link-name = "HiFi-ASRC-BE";
116 format = "dsp_b";
117 dai-tdm-slot-num = <8>;
118 dai-tdm-slot-width = <32>;
119 fsl,mclk-equal-bclk;
120 cpu {
121 sound-dai = <&sai1>;
122 };
123 codec {
124 sound-dai = <&ak4458_1>, <&ak4458_2>;
125 };
126 };
127 };