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-amx.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Tegra210 AMX
8
9 description: |
10 The Audio Multiplexer (AMX) block can multiplex up to four input streams
11 each of which can have maximum 16 channels and generate an output stream
12 with maximum 16 channels. A byte RAM helps to form an output frame by
13 any combination of bytes from the input frames.
14
15 maintainers:
16 - Jon Hunter <jonathanh@nvidia.com>
17 - Mohan Kumar <mkumard@nvidia.com>
18 - Sameer Pujar <spujar@nvidia.com>
19
20 allOf:
21 - $ref: dai-common.yaml#
22
23 properties:
24 $nodename:
25 pattern: "^amx@[0-9a-f]*$"
26
27 compatible:
28 oneOf:
29 - const: nvidia,tegra210-amx
30 - items:
31 - const: nvidia,tegra186-amx
32 - const: nvidia,tegra210-amx
33 - const: nvidia,tegra194-amx
34 - items:
35 - const: nvidia,tegra234-amx
36 - const: nvidia,tegra194-amx
37
38 reg:
39 maxItems: 1
40
41 sound-name-prefix:
42 pattern: "^AMX[1-9]$"
43
44 ports:
45 $ref: /schemas/graph.yaml#/properties/ports
46 description: |
47 AMX has four inputs and one output. Accordingly ACIF (Audio Client
48 Interfaces) port nodes are defined to represent AMX inputs (port 0
49 to 3) and output (port 4). These are connected to corresponding
50 ports on AHUB (Audio Hub).
51
52 patternProperties:
53 '^port@[0-3]':
54 $ref: audio-graph-port.yaml#
55 unevaluatedProperties: false
56 description: AMX ACIF input ports
57
58 properties:
59 port@4:
60 $ref: audio-graph-port.yaml#
61 unevaluatedProperties: false
62 description: AMX ACIF output port
63
64 required:
65 - compatible
66 - reg
67
68 additionalProperties: false
69
70 examples:
71 - |
72
73 amx@702d3000 {
74 compatible = "nvidia,tegra210-amx";
75 reg = <0x702d3000 0x100>;
76 sound-name-prefix = "AMX1";
77 };
78
79 ...
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