xref: /linux/Documentation/devicetree/bindings/sound/nvidia,tegra210-admaif.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
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
7title: Tegra210 ADMAIF
8
9description: |
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
16maintainers:
17  - Jon Hunter <jonathanh@nvidia.com>
18  - Sameer Pujar <spujar@nvidia.com>
19
20properties:
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        $ref: audio-graph-port.yaml#
54        unevaluatedProperties: false
55
56if:
57  properties:
58    compatible:
59      contains:
60        const: nvidia,tegra210-admaif
61
62then:
63  properties:
64    dmas:
65      description:
66        DMA channel specifiers, equally divided for Tx and Rx.
67      minItems: 1
68      maxItems: 20
69    dma-names:
70      items:
71        pattern: "^[rt]x(10|[1-9])$"
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
78else:
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
94required:
95  - compatible
96  - reg
97  - dmas
98  - dma-names
99
100additionalProperties: false
101
102examples:
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...
130