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-admaif.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Tegra210 ADMAIF
8
9 description: |
10 ADMAIF is the interface between ADMA and AHUB. Each ADMA channel
11 that sends/receives data to/from AHUB must interface through an
12 ADMAIF channel. ADMA channel sending data to AHUB pairs with ADMAIF
13 Tx channel and ADMA channel receiving data from AHUB pairs with
14 ADMAIF Rx channel.
15
16 maintainers:
17 - Jon Hunter <jonathanh@nvidia.com>
18 - Sameer Pujar <spujar@nvidia.com>
19
20 properties:
21 $nodename:
22 pattern: "^admaif@[0-9a-f]*$"
23
24 compatible:
25 oneOf:
26 - enum:
27 - nvidia,tegra210-admaif
28 - nvidia,tegra186-admaif
29 - items:
30 - enum:
31 - nvidia,tegra234-admaif
32 - nvidia,tegra194-admaif
33 - const: nvidia,tegra186-admaif
34
35 reg:
36 maxItems: 1
37
38 dmas: true
39
40 dma-names: true
41
42 ports:
43 $ref: /schemas/graph.yaml#/properties/ports
44 description: |
45 Contains list of ACIF (Audio CIF) port nodes for ADMAIF channels.
46 The number of port nodes depends on the number of ADMAIF channels
47 that SoC may have. These are interfaced with respective ACIF ports
48 in AHUB (Audio Hub). Each port is capable of data transfers in
49 both directions.
50
51 patternProperties:
52 '^port@[0-9]':
53 $ref: audio-graph-port.yaml#
54 unevaluatedProperties: false
55
56 if:
57 properties:
58 compatible:
59 contains:
60 const: nvidia,tegra210-admaif
61
62 then:
63 properties:
64 dmas:
65 description:
66 DMA channel specifiers, equally divided for Tx and Rx.
67 minItems: 1
68 maxItems: 20
69 dma-names:
70 items:
71 pattern: "^[rt]x(10|[1-9])$"
72 description:
73 Should be "rx1", "rx2" ... "rx10" for DMA Rx channel
74 Should be "tx1", "tx2" ... "tx10" for DMA Tx channel
75 minItems: 1
76 maxItems: 20
77
78 else:
79 properties:
80 dmas:
81 description:
82 DMA channel specifiers, equally divided for Tx and Rx.
83 minItems: 1
84 maxItems: 40
85 dma-names:
86 items:
87 pattern: "^[rt]x(1[0-9]|[1-9]|20)$"
88 description:
89 Should be "rx1", "rx2" ... "rx20" for DMA Rx channel
90 Should be "tx1", "tx2" ... "tx20" for DMA Tx channel
91 minItems: 1
92 maxItems: 40
93
94 required:
95 - compatible
96 - reg
97 - dmas
98 - dma-names
99
100 additionalProperties: false
101
102 examples:
103 - |
104 admaif@702d0000 {
105 compatible = "nvidia,tegra210-admaif";
106 reg = <0x702d0000 0x800>;
107 dmas = <&adma 1>, <&adma 1>,
108 <&adma 2>, <&adma 2>,
109 <&adma 3>, <&adma 3>,
110 <&adma 4>, <&adma 4>,
111 <&adma 5>, <&adma 5>,
112 <&adma 6>, <&adma 6>,
113 <&adma 7>, <&adma 7>,
114 <&adma 8>, <&adma 8>,
115 <&adma 9>, <&adma 9>,
116 <&adma 10>, <&adma 10>;
117 dma-names = "rx1", "tx1",
118 "rx2", "tx2",
119 "rx3", "tx3",
120 "rx4", "tx4",
121 "rx5", "tx5",
122 "rx6", "tx6",
123 "rx7", "tx7",
124 "rx8", "tx8",
125 "rx9", "tx9",
126 "rx10", "tx10";
127 };
128
129 ...
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