xref: /linux/Documentation/devicetree/bindings/sound/nvidia,tegra20-spdif.yaml (revision 72bea132f3680ee51e7ed2cee62892b6f5121909) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/nvidia,tegra20-spdif.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NVIDIA Tegra20 S/PDIF Controller
8
9description: |
10  The S/PDIF controller supports both input and output in serial audio
11  digital interface format. The input controller can digitally recover
12  a clock from the received stream. The S/PDIF controller is also used
13  to generate the embedded audio for HDMI output channel.
14
15maintainers:
16  - Thierry Reding <treding@nvidia.com>
17  - Jon Hunter <jonathanh@nvidia.com>
18
19allOf:
20  - $ref: dai-common.yaml#
21
22properties:
23  compatible:
24    const: nvidia,tegra20-spdif
25
26  reg:
27    maxItems: 1
28
29  resets:
30    maxItems: 1
31
32  interrupts:
33    maxItems: 1
34
35  clocks:
36    minItems: 2
37
38  clock-names:
39    items:
40      - const: out
41      - const: in
42
43  dmas:
44    minItems: 2
45
46  dma-names:
47    items:
48      - const: rx
49      - const: tx
50
51  "#sound-dai-cells":
52    const: 0
53
54  nvidia,fixed-parent-rate:
55    description: |
56      Specifies whether board prefers parent clock to stay at a fixed rate.
57      This allows multiple Tegra20 audio components work simultaneously by
58      limiting number of supportable audio rates.
59    type: boolean
60
61required:
62  - compatible
63  - reg
64  - resets
65  - interrupts
66  - clocks
67  - clock-names
68  - dmas
69  - dma-names
70  - "#sound-dai-cells"
71
72unevaluatedProperties: false
73
74examples:
75  - |
76    spdif@70002400 {
77        compatible = "nvidia,tegra20-spdif";
78        reg = <0x70002400 0x200>;
79        interrupts = <77>;
80        clocks = <&clk 99>, <&clk 98>;
81        clock-names = "out", "in";
82        resets = <&rst 10>;
83        dmas = <&apbdma 3>, <&apbdma 3>;
84        dma-names = "rx", "tx";
85        #sound-dai-cells = <0>;
86    };
87
88...
89