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