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: 19 allOf:
20 - $ref: dai-common.yaml# !! 20 - $ref: audio-graph-port.yaml#
21 21
22 properties: 22 properties:
23 $nodename: 23 $nodename:
24 pattern: "^i2s@[0-9a-f]*$" 24 pattern: "^i2s@[0-9a-f]*$"
25 25
26 compatible: 26 compatible:
27 oneOf: 27 oneOf:
28 - const: nvidia,tegra210-i2s 28 - const: nvidia,tegra210-i2s
29 - items: 29 - items:
30 - enum: 30 - enum:
31 - nvidia,tegra234-i2s <<
32 - nvidia,tegra194-i2s 31 - nvidia,tegra194-i2s
33 - nvidia,tegra186-i2s 32 - nvidia,tegra186-i2s
34 - const: nvidia,tegra210-i2s 33 - const: nvidia,tegra210-i2s
35 34
36 reg: 35 reg:
37 maxItems: 1 36 maxItems: 1
38 37
39 clocks: 38 clocks:
40 minItems: 1 39 minItems: 1
>> 40 maxItems: 2
41 items: 41 items:
42 - description: I2S bit clock 42 - description: I2S bit clock
43 - description: 43 - description:
44 Sync input clock, which can act as c 44 Sync input clock, which can act as clock source to other I/O
45 modules in AHUB. The Tegra I2S drive 45 modules in AHUB. The Tegra I2S driver sets this clock rate as
46 per bit clock rate. I/O module which 46 per bit clock rate. I/O module which wants to use this clock
47 as source, can mention this clock as 47 as source, can mention this clock as parent in the DT bindings.
48 This is an optional clock entry, sin 48 This is an optional clock entry, since it is only required when
49 some other I/O wants to reference fr 49 some other I/O wants to reference from a particular I2Sx
50 instance. 50 instance.
51 51
52 clock-names: 52 clock-names:
53 minItems: 1 53 minItems: 1
>> 54 maxItems: 2
54 items: 55 items:
55 - const: i2s 56 - const: i2s
56 - const: sync_input 57 - const: sync_input
57 58
58 assigned-clocks: 59 assigned-clocks:
59 minItems: 1 60 minItems: 1
60 maxItems: 2 61 maxItems: 2
61 62
62 assigned-clock-parents: 63 assigned-clock-parents:
63 minItems: 1 64 minItems: 1
64 maxItems: 2 65 maxItems: 2
65 66
66 assigned-clock-rates: 67 assigned-clock-rates:
67 minItems: 1 68 minItems: 1
68 maxItems: 2 69 maxItems: 2
69 70
70 sound-name-prefix: 71 sound-name-prefix:
71 pattern: "^I2S[1-9]$" 72 pattern: "^I2S[1-9]$"
>> 73 $ref: /schemas/types.yaml#/definitions/string
>> 74 description:
>> 75 Used as prefix for sink/source names of the component. Must be a
>> 76 unique string among multiple instances of the same component.
>> 77 The name can be "I2S1" or "I2S2" ... "I2Sx", where x depends
>> 78 on the maximum available instances on a Tegra SoC.
72 79
73 ports: 80 ports:
74 $ref: /schemas/graph.yaml#/properties/port !! 81 type: object
75 properties: 82 properties:
76 port@0: 83 port@0:
77 $ref: audio-graph-port.yaml# <<
78 unevaluatedProperties: false <<
79 description: | 84 description: |
80 I2S ACIF (Audio Client Interface) po 85 I2S ACIF (Audio Client Interface) port connected to the
81 corresponding AHUB (Audio Hub) ACIF 86 corresponding AHUB (Audio Hub) ACIF port.
82 87
83 port@1: 88 port@1:
84 $ref: audio-graph-port.yaml# <<
85 unevaluatedProperties: false <<
86 description: | 89 description: |
87 I2S DAP (Digital Audio Port) interfa 90 I2S DAP (Digital Audio Port) interface which can be connected
88 to external audio codec for playback 91 to external audio codec for playback or capture.
89 92
90 required: 93 required:
91 - compatible 94 - compatible
92 - reg 95 - reg
93 - clocks 96 - clocks
94 - clock-names 97 - clock-names
95 - assigned-clocks 98 - assigned-clocks
96 - assigned-clock-parents 99 - assigned-clock-parents
97 100
98 additionalProperties: false !! 101 unevaluatedProperties: false
99 102
100 examples: 103 examples:
101 - | 104 - |
102 #include<dt-bindings/clock/tegra210-car.h> 105 #include<dt-bindings/clock/tegra210-car.h>
103 106
104 i2s@702d1000 { 107 i2s@702d1000 {
105 compatible = "nvidia,tegra210-i2s"; 108 compatible = "nvidia,tegra210-i2s";
106 reg = <0x702d1000 0x100>; 109 reg = <0x702d1000 0x100>;
107 clocks = <&tegra_car TEGRA210_CLK_I2S0 110 clocks = <&tegra_car TEGRA210_CLK_I2S0>;
108 clock-names = "i2s"; 111 clock-names = "i2s";
109 assigned-clocks = <&tegra_car TEGRA210 112 assigned-clocks = <&tegra_car TEGRA210_CLK_I2S0>;
110 assigned-clock-parents = <&tegra_car T 113 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
111 assigned-clock-rates = <1536000>; 114 assigned-clock-rates = <1536000>;
112 sound-name-prefix = "I2S1"; 115 sound-name-prefix = "I2S1";
113 }; 116 };
114 117
115 ... 118 ...
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