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-dmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Tegra210 DMIC Controller !! 7 title: Tegra210 DMIC Controller Device Tree Bindings
8 8
9 description: | 9 description: |
10 The Digital MIC (DMIC) Controller is used to 10 The Digital MIC (DMIC) Controller is used to interface with Pulse
11 Density Modulation (PDM) input devices. It c 11 Density Modulation (PDM) input devices. It converts PDM signals to
12 Pulse Coded Modulation (PCM) signals. DMIC c 12 Pulse Coded Modulation (PCM) signals. DMIC can be viewed as a PDM
13 receiver. 13 receiver.
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 $nodename:
24 pattern: "^dmic@[0-9a-f]*$" 24 pattern: "^dmic@[0-9a-f]*$"
25 25
26 compatible: 26 compatible:
27 oneOf: 27 oneOf:
28 - const: nvidia,tegra210-dmic 28 - const: nvidia,tegra210-dmic
29 - items: 29 - items:
30 - enum: 30 - enum:
31 - nvidia,tegra234-dmic <<
32 - nvidia,tegra194-dmic 31 - nvidia,tegra194-dmic
33 - nvidia,tegra186-dmic 32 - nvidia,tegra186-dmic
34 - const: nvidia,tegra210-dmic 33 - const: nvidia,tegra210-dmic
35 34
36 reg: 35 reg:
37 maxItems: 1 36 maxItems: 1
38 37
39 clocks: 38 clocks:
40 maxItems: 1 39 maxItems: 1
41 40
42 clock-names: 41 clock-names:
43 const: dmic 42 const: dmic
44 43
45 assigned-clocks: 44 assigned-clocks:
46 maxItems: 1 45 maxItems: 1
47 46
48 assigned-clock-parents: 47 assigned-clock-parents:
49 maxItems: 1 48 maxItems: 1
50 49
51 assigned-clock-rates: 50 assigned-clock-rates:
52 maxItems: 1 51 maxItems: 1
53 52
54 sound-name-prefix: 53 sound-name-prefix:
55 pattern: "^DMIC[1-9]$" 54 pattern: "^DMIC[1-9]$"
>> 55 $ref: /schemas/types.yaml#/definitions/string
>> 56 description:
>> 57 used as prefix for sink/source names of the component. Must be a
>> 58 unique string among multiple instances of the same component.
>> 59 The name can be "DMIC1" or "DMIC2" ... "DMICx", where x depends
>> 60 on the maximum available instances on a Tegra SoC.
56 61
57 ports: 62 ports:
58 $ref: /schemas/graph.yaml#/properties/port !! 63 type: object
59 properties: 64 properties:
60 port@0: 65 port@0:
61 $ref: audio-graph-port.yaml# <<
62 unevaluatedProperties: false <<
63 description: | 66 description: |
64 DMIC ACIF (Audio Client Interface) p 67 DMIC ACIF (Audio Client Interface) port connected to the
65 corresponding AHUB (Audio Hub) ACIF 68 corresponding AHUB (Audio Hub) ACIF port.
66 69
67 port@1: 70 port@1:
68 $ref: audio-graph-port.yaml# <<
69 unevaluatedProperties: false <<
70 description: | 71 description: |
71 DMIC DAP (Digital Audio Port) interf 72 DMIC DAP (Digital Audio Port) interface which can be connected
72 to external audio codec for capture. 73 to external audio codec for capture.
73 74
74 required: 75 required:
75 - compatible 76 - compatible
76 - reg 77 - reg
77 - clocks 78 - clocks
78 - clock-names 79 - clock-names
79 - assigned-clocks 80 - assigned-clocks
80 - assigned-clock-parents 81 - assigned-clock-parents
81 82
82 additionalProperties: false !! 83 unevaluatedProperties: false
83 84
84 examples: 85 examples:
85 - | 86 - |
86 #include<dt-bindings/clock/tegra210-car.h> 87 #include<dt-bindings/clock/tegra210-car.h>
87 88
88 dmic@702d4000 { 89 dmic@702d4000 {
89 compatible = "nvidia,tegra210-dmic"; 90 compatible = "nvidia,tegra210-dmic";
90 reg = <0x702d4000 0x100>; 91 reg = <0x702d4000 0x100>;
91 clocks = <&tegra_car TEGRA210_CLK_DMIC 92 clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
92 clock-names = "dmic"; 93 clock-names = "dmic";
93 assigned-clocks = <&tegra_car TEGRA210 94 assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
94 assigned-clock-parents = <&tegra_car T 95 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
95 assigned-clock-rates = <3072000>; 96 assigned-clock-rates = <3072000>;
96 sound-name-prefix = "DMIC1"; 97 sound-name-prefix = "DMIC1";
97 }; 98 };
98 99
99 ... 100 ...
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