1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/nvidi
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Tegra210 I2S Controller
8
9 description: |
10 The Inter-IC Sound (I2S) controller implemen
11 bi-directional and single direction point-to
12 interfaces. It can interface with I2S compat
13 I2S controller can operate both in master an
14
15 maintainers:
16 - Jon Hunter <jonathanh@nvidia.com>
17 - Sameer Pujar <spujar@nvidia.com>
18
19 allOf:
20 - $ref: dai-common.yaml#
21
22 properties:
23 $nodename:
24 pattern: "^i2s@[0-9a-f]*$"
25
26 compatible:
27 oneOf:
28 - const: nvidia,tegra210-i2s
29 - items:
30 - enum:
31 - nvidia,tegra234-i2s
32 - nvidia,tegra194-i2s
33 - nvidia,tegra186-i2s
34 - const: nvidia,tegra210-i2s
35
36 reg:
37 maxItems: 1
38
39 clocks:
40 minItems: 1
41 items:
42 - description: I2S bit clock
43 - description:
44 Sync input clock, which can act as c
45 modules in AHUB. The Tegra I2S drive
46 per bit clock rate. I/O module which
47 as source, can mention this clock as
48 This is an optional clock entry, sin
49 some other I/O wants to reference fr
50 instance.
51
52 clock-names:
53 minItems: 1
54 items:
55 - const: i2s
56 - const: sync_input
57
58 assigned-clocks:
59 minItems: 1
60 maxItems: 2
61
62 assigned-clock-parents:
63 minItems: 1
64 maxItems: 2
65
66 assigned-clock-rates:
67 minItems: 1
68 maxItems: 2
69
70 sound-name-prefix:
71 pattern: "^I2S[1-9]$"
72
73 ports:
74 $ref: /schemas/graph.yaml#/properties/port
75 properties:
76 port@0:
77 $ref: audio-graph-port.yaml#
78 unevaluatedProperties: false
79 description: |
80 I2S ACIF (Audio Client Interface) po
81 corresponding AHUB (Audio Hub) ACIF
82
83 port@1:
84 $ref: audio-graph-port.yaml#
85 unevaluatedProperties: false
86 description: |
87 I2S DAP (Digital Audio Port) interfa
88 to external audio codec for playback
89
90 required:
91 - compatible
92 - reg
93 - clocks
94 - clock-names
95 - assigned-clocks
96 - assigned-clock-parents
97
98 additionalProperties: false
99
100 examples:
101 - |
102 #include<dt-bindings/clock/tegra210-car.h>
103
104 i2s@702d1000 {
105 compatible = "nvidia,tegra210-i2s";
106 reg = <0x702d1000 0x100>;
107 clocks = <&tegra_car TEGRA210_CLK_I2S0
108 clock-names = "i2s";
109 assigned-clocks = <&tegra_car TEGRA210
110 assigned-clock-parents = <&tegra_car T
111 assigned-clock-rates = <1536000>;
112 sound-name-prefix = "I2S1";
113 };
114
115 ...
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