1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/nvidia,tegra210-adx.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Tegra210 ADX
8
9 description: |
10 The Audio Demultiplexer (ADX) block takes an input stream with up to
11 16 channels and demultiplexes it into four output streams of up to 16
12 channels each. A byte RAM helps to form output frames by any combination
13 of bytes from the input frame. Its design is identical to that of byte
14 RAM in the AMX except that the data flow direction is reversed.
15
16 maintainers:
17 - Jon Hunter <jonathanh@nvidia.com>
18 - Mohan Kumar <mkumard@nvidia.com>
19 - Sameer Pujar <spujar@nvidia.com>
20
21 allOf:
22 - $ref: dai-common.yaml#
23
24 properties:
25 $nodename:
26 pattern: "^adx@[0-9a-f]*$"
27
28 compatible:
29 oneOf:
30 - const: nvidia,tegra210-adx
31 - items:
32 - enum:
33 - nvidia,tegra234-adx
34 - nvidia,tegra194-adx
35 - nvidia,tegra186-adx
36 - const: nvidia,tegra210-adx
37
38 reg:
39 maxItems: 1
40
41 sound-name-prefix:
42 pattern: "^ADX[1-9]$"
43
44 ports:
45 $ref: /schemas/graph.yaml#/properties/ports
46 description: |
47 ADX has one input and four outputs. Accordingly ACIF (Audio Client
48 Interface) port nodes are defined to represent ADX input (port 0)
49 and outputs (ports 1 to 4). These are connected to corresponding
50 ports on AHUB (Audio Hub).
51 properties:
52 port@0:
53 $ref: audio-graph-port.yaml#
54 unevaluatedProperties: false
55 description: ADX ACIF input port
56 patternProperties:
57 '^port@[1-4]':
58 $ref: audio-graph-port.yaml#
59 unevaluatedProperties: false
60 description: ADX ACIF output ports
61
62 required:
63 - compatible
64 - reg
65
66 additionalProperties: false
67
68 examples:
69 - |
70
71 adx@702d3800 {
72 compatible = "nvidia,tegra210-adx";
73 reg = <0x702d3800 0x100>;
74 sound-name-prefix = "ADX1";
75 };
76
77 ...
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