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: <<
20 - $ref: dai-common.yaml# <<
21 <<
22 properties: 19 properties:
23 $nodename: 20 $nodename:
24 pattern: "^dmic@[0-9a-f]*$" 21 pattern: "^dmic@[0-9a-f]*$"
25 22
26 compatible: 23 compatible:
27 oneOf: 24 oneOf:
28 - const: nvidia,tegra210-dmic 25 - const: nvidia,tegra210-dmic
29 - items: 26 - items:
30 - enum: 27 - enum:
31 - nvidia,tegra234-dmic <<
32 - nvidia,tegra194-dmic 28 - nvidia,tegra194-dmic
33 - nvidia,tegra186-dmic 29 - nvidia,tegra186-dmic
34 - const: nvidia,tegra210-dmic 30 - const: nvidia,tegra210-dmic
35 31
36 reg: 32 reg:
37 maxItems: 1 33 maxItems: 1
38 34
39 clocks: 35 clocks:
40 maxItems: 1 36 maxItems: 1
41 37
42 clock-names: 38 clock-names:
43 const: dmic 39 const: dmic
44 40
45 assigned-clocks: 41 assigned-clocks:
46 maxItems: 1 42 maxItems: 1
47 43
48 assigned-clock-parents: 44 assigned-clock-parents:
49 maxItems: 1 45 maxItems: 1
50 46
51 assigned-clock-rates: 47 assigned-clock-rates:
52 maxItems: 1 48 maxItems: 1
53 49
54 sound-name-prefix: 50 sound-name-prefix:
55 pattern: "^DMIC[1-9]$" 51 pattern: "^DMIC[1-9]$"
>> 52 $ref: /schemas/types.yaml#/definitions/string
>> 53 description:
>> 54 used as prefix for sink/source names of the component. Must be a
>> 55 unique string among multiple instances of the same component.
>> 56 The name can be "DMIC1" or "DMIC2" ... "DMICx", where x depends
>> 57 on the maximum available instances on a Tegra SoC.
56 58
57 ports: 59 ports:
58 $ref: /schemas/graph.yaml#/properties/port 60 $ref: /schemas/graph.yaml#/properties/ports
59 properties: 61 properties:
60 port@0: 62 port@0:
61 $ref: audio-graph-port.yaml# 63 $ref: audio-graph-port.yaml#
62 unevaluatedProperties: false 64 unevaluatedProperties: false
63 description: | 65 description: |
64 DMIC ACIF (Audio Client Interface) p 66 DMIC ACIF (Audio Client Interface) port connected to the
65 corresponding AHUB (Audio Hub) ACIF 67 corresponding AHUB (Audio Hub) ACIF port.
66 68
67 port@1: 69 port@1:
68 $ref: audio-graph-port.yaml# 70 $ref: audio-graph-port.yaml#
69 unevaluatedProperties: false 71 unevaluatedProperties: false
70 description: | 72 description: |
71 DMIC DAP (Digital Audio Port) interf 73 DMIC DAP (Digital Audio Port) interface which can be connected
72 to external audio codec for capture. 74 to external audio codec for capture.
73 75
74 required: 76 required:
75 - compatible 77 - compatible
76 - reg 78 - reg
77 - clocks 79 - clocks
78 - clock-names 80 - clock-names
79 - assigned-clocks 81 - assigned-clocks
80 - assigned-clock-parents 82 - assigned-clock-parents
81 83
82 additionalProperties: false 84 additionalProperties: false
83 85
84 examples: 86 examples:
85 - | 87 - |
86 #include<dt-bindings/clock/tegra210-car.h> 88 #include<dt-bindings/clock/tegra210-car.h>
87 89
88 dmic@702d4000 { 90 dmic@702d4000 {
89 compatible = "nvidia,tegra210-dmic"; 91 compatible = "nvidia,tegra210-dmic";
90 reg = <0x702d4000 0x100>; 92 reg = <0x702d4000 0x100>;
91 clocks = <&tegra_car TEGRA210_CLK_DMIC 93 clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
92 clock-names = "dmic"; 94 clock-names = "dmic";
93 assigned-clocks = <&tegra_car TEGRA210 95 assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
94 assigned-clock-parents = <&tegra_car T 96 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
95 assigned-clock-rates = <3072000>; 97 assigned-clock-rates = <3072000>;
96 sound-name-prefix = "DMIC1"; 98 sound-name-prefix = "DMIC1";
97 }; 99 };
98 100
99 ... 101 ...
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