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