1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/sound/nvidi 4 $id: http://devicetree.org/schemas/sound/nvidia,tegra210-i2s.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Tegra210 I2S Controller !! 7 title: Tegra210 I2S Controller Device Tree Bindings
8 8
9 description: | 9 description: |
10 The Inter-IC Sound (I2S) controller implemen 10 The Inter-IC Sound (I2S) controller implements full-duplex,
11 bi-directional and single direction point-to 11 bi-directional and single direction point-to-point serial
12 interfaces. It can interface with I2S compat 12 interfaces. It can interface with I2S compatible devices.
13 I2S controller can operate both in master an 13 I2S controller can operate both in master and slave mode.
14 14
15 maintainers: 15 maintainers:
16 - Jon Hunter <jonathanh@nvidia.com> 16 - Jon Hunter <jonathanh@nvidia.com>
17 - Sameer Pujar <spujar@nvidia.com> 17 - Sameer Pujar <spujar@nvidia.com>
18 18
19 allOf: <<
20 - $ref: dai-common.yaml# <<
21 <<
22 properties: 19 properties:
23 $nodename: 20 $nodename:
24 pattern: "^i2s@[0-9a-f]*$" 21 pattern: "^i2s@[0-9a-f]*$"
25 22
26 compatible: 23 compatible:
27 oneOf: 24 oneOf:
28 - const: nvidia,tegra210-i2s 25 - const: nvidia,tegra210-i2s
29 - items: 26 - items:
30 - enum: 27 - enum:
31 - nvidia,tegra234-i2s <<
32 - nvidia,tegra194-i2s 28 - nvidia,tegra194-i2s
33 - nvidia,tegra186-i2s 29 - nvidia,tegra186-i2s
34 - const: nvidia,tegra210-i2s 30 - const: nvidia,tegra210-i2s
35 31
36 reg: 32 reg:
37 maxItems: 1 33 maxItems: 1
38 34
39 clocks: 35 clocks:
40 minItems: 1 36 minItems: 1
>> 37 maxItems: 2
41 items: 38 items:
42 - description: I2S bit clock 39 - description: I2S bit clock
43 - description: 40 - description:
44 Sync input clock, which can act as c 41 Sync input clock, which can act as clock source to other I/O
45 modules in AHUB. The Tegra I2S drive 42 modules in AHUB. The Tegra I2S driver sets this clock rate as
46 per bit clock rate. I/O module which 43 per bit clock rate. I/O module which wants to use this clock
47 as source, can mention this clock as 44 as source, can mention this clock as parent in the DT bindings.
48 This is an optional clock entry, sin 45 This is an optional clock entry, since it is only required when
49 some other I/O wants to reference fr 46 some other I/O wants to reference from a particular I2Sx
50 instance. 47 instance.
51 48
52 clock-names: 49 clock-names:
53 minItems: 1 50 minItems: 1
>> 51 maxItems: 2
54 items: 52 items:
55 - const: i2s 53 - const: i2s
56 - const: sync_input 54 - const: sync_input
57 55
58 assigned-clocks: 56 assigned-clocks:
59 minItems: 1 57 minItems: 1
60 maxItems: 2 58 maxItems: 2
61 59
62 assigned-clock-parents: 60 assigned-clock-parents:
63 minItems: 1 61 minItems: 1
64 maxItems: 2 62 maxItems: 2
65 63
66 assigned-clock-rates: 64 assigned-clock-rates:
67 minItems: 1 65 minItems: 1
68 maxItems: 2 66 maxItems: 2
69 67
70 sound-name-prefix: 68 sound-name-prefix:
71 pattern: "^I2S[1-9]$" 69 pattern: "^I2S[1-9]$"
72 !! 70 $ref: /schemas/types.yaml#/definitions/string
73 ports: !! 71 description:
74 $ref: /schemas/graph.yaml#/properties/port !! 72 Used as prefix for sink/source names of the component. Must be a
75 properties: !! 73 unique string among multiple instances of the same component.
76 port@0: !! 74 The name can be "I2S1" or "I2S2" ... "I2Sx", where x depends
77 $ref: audio-graph-port.yaml# !! 75 on the maximum available instances on a Tegra SoC.
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 76
90 required: 77 required:
91 - compatible 78 - compatible
92 - reg 79 - reg
93 - clocks 80 - clocks
94 - clock-names 81 - clock-names
95 - assigned-clocks 82 - assigned-clocks
96 - assigned-clock-parents 83 - assigned-clock-parents
97 <<
98 additionalProperties: false <<
99 84
100 examples: 85 examples:
101 - | 86 - |
102 #include<dt-bindings/clock/tegra210-car.h> 87 #include<dt-bindings/clock/tegra210-car.h>
103 88
104 i2s@702d1000 { 89 i2s@702d1000 {
105 compatible = "nvidia,tegra210-i2s"; 90 compatible = "nvidia,tegra210-i2s";
106 reg = <0x702d1000 0x100>; 91 reg = <0x702d1000 0x100>;
107 clocks = <&tegra_car TEGRA210_CLK_I2S0 92 clocks = <&tegra_car TEGRA210_CLK_I2S0>;
108 clock-names = "i2s"; 93 clock-names = "i2s";
109 assigned-clocks = <&tegra_car TEGRA210 94 assigned-clocks = <&tegra_car TEGRA210_CLK_I2S0>;
110 assigned-clock-parents = <&tegra_car T 95 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
111 assigned-clock-rates = <1536000>; 96 assigned-clock-rates = <1536000>;
112 sound-name-prefix = "I2S1"; 97 sound-name-prefix = "I2S1";
113 }; 98 };
114 99
115 ... 100 ...
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