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