1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/nvidi
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Tegra210 DMIC Controller
8
9 description: |
10 The Digital MIC (DMIC) Controller is used to
11 Density Modulation (PDM) input devices. It c
12 Pulse Coded Modulation (PCM) signals. DMIC c
13 receiver.
14
15 maintainers:
16 - Jon Hunter <jonathanh@nvidia.com>
17 - Sameer Pujar <spujar@nvidia.com>
18
19 allOf:
20 - $ref: dai-common.yaml#
21
22 properties:
23 $nodename:
24 pattern: "^dmic@[0-9a-f]*$"
25
26 compatible:
27 oneOf:
28 - const: nvidia,tegra210-dmic
29 - items:
30 - enum:
31 - nvidia,tegra234-dmic
32 - nvidia,tegra194-dmic
33 - nvidia,tegra186-dmic
34 - const: nvidia,tegra210-dmic
35
36 reg:
37 maxItems: 1
38
39 clocks:
40 maxItems: 1
41
42 clock-names:
43 const: dmic
44
45 assigned-clocks:
46 maxItems: 1
47
48 assigned-clock-parents:
49 maxItems: 1
50
51 assigned-clock-rates:
52 maxItems: 1
53
54 sound-name-prefix:
55 pattern: "^DMIC[1-9]$"
56
57 ports:
58 $ref: /schemas/graph.yaml#/properties/port
59 properties:
60 port@0:
61 $ref: audio-graph-port.yaml#
62 unevaluatedProperties: false
63 description: |
64 DMIC ACIF (Audio Client Interface) p
65 corresponding AHUB (Audio Hub) ACIF
66
67 port@1:
68 $ref: audio-graph-port.yaml#
69 unevaluatedProperties: false
70 description: |
71 DMIC DAP (Digital Audio Port) interf
72 to external audio codec for capture.
73
74 required:
75 - compatible
76 - reg
77 - clocks
78 - clock-names
79 - assigned-clocks
80 - assigned-clock-parents
81
82 additionalProperties: false
83
84 examples:
85 - |
86 #include<dt-bindings/clock/tegra210-car.h>
87
88 dmic@702d4000 {
89 compatible = "nvidia,tegra210-dmic";
90 reg = <0x702d4000 0x100>;
91 clocks = <&tegra_car TEGRA210_CLK_DMIC
92 clock-names = "dmic";
93 assigned-clocks = <&tegra_car TEGRA210
94 assigned-clock-parents = <&tegra_car T
95 assigned-clock-rates = <3072000>;
96 sound-name-prefix = "DMIC1";
97 };
98
99 ...
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.