xref: /freebsd/sys/contrib/device-tree/Bindings/sound/amlogic,gx-sound-card.yaml (revision 77013d11e6483b970af25e13c9b892075742f7e5) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/amlogic,gx-sound-card.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Amlogic GX sound card
8
9maintainers:
10  - Jerome Brunet <jbrunet@baylibre.com>
11
12properties:
13  compatible:
14    items:
15      - const: amlogic,gx-sound-card
16
17  audio-aux-devs:
18    $ref: /schemas/types.yaml#/definitions/phandle-array
19    description: list of auxiliary devices
20
21  audio-routing:
22    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
23    minItems: 2
24    description: |-
25      A list of the connections between audio components. Each entry is a
26      pair of strings, the first being the connection's sink, the second
27      being the connection's source.
28
29  audio-widgets:
30    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
31    minItems: 2
32    description: |-
33      A list off component DAPM widget. Each entry is a pair of strings,
34      the first being the widget type, the second being the widget name
35
36  model:
37    $ref: /schemas/types.yaml#/definitions/string
38    description: User specified audio sound card name
39
40patternProperties:
41  "^dai-link-[0-9]+$":
42    type: object
43    description: |-
44      dai-link child nodes:
45        Container for dai-link level properties and the CODEC sub-nodes.
46        There should be at least one (and probably more) subnode of this type
47
48    properties:
49      dai-format:
50        $ref: /schemas/types.yaml#/definitions/string
51        enum: [ i2s, left-j, dsp_a ]
52
53      mclk-fs:
54        $ref: /schemas/types.yaml#/definitions/uint32
55        description: |-
56          Multiplication factor between the frame rate and master clock
57          rate
58
59      sound-dai:
60        $ref: /schemas/types.yaml#/definitions/phandle-array
61        description: phandle of the CPU DAI
62
63    patternProperties:
64      "^codec-[0-9]+$":
65        type: object
66        description: |-
67          Codecs:
68          dai-link representing backend links should have at least one subnode.
69          One subnode for each codec of the dai-link. dai-link representing
70          frontend links have no codec, therefore have no subnodes
71
72        properties:
73          sound-dai:
74            $ref: /schemas/types.yaml#/definitions/phandle-array
75            description: phandle of the codec DAI
76
77        required:
78          - sound-dai
79
80    required:
81      - sound-dai
82
83required:
84  - model
85  - dai-link-0
86
87additionalProperties: false
88
89examples:
90  - |
91    sound {
92        compatible = "amlogic,gx-sound-card";
93        model = "GXL-ACME-S905X-FOO";
94        audio-aux-devs = <&amp>;
95        audio-routing = "I2S ENCODER I2S IN", "I2S FIFO Playback";
96
97        dai-link-0 {
98               sound-dai = <&i2s_fifo>;
99        };
100
101        dai-link-1 {
102                sound-dai = <&i2s_encoder>;
103                dai-format = "i2s";
104                mclk-fs = <256>;
105
106                codec-0 {
107                        sound-dai = <&codec0>;
108                };
109
110                codec-1 {
111                        sound-dai = <&codec1>;
112                };
113        };
114    };
115
116