tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/nvidia,tegra210-dmic.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Tegra210 DMIC Controller
8
9description: |
10 The Digital MIC (DMIC) Controller is used to interface with Pulse
11 Density Modulation (PDM) input devices. It converts PDM signals to
12 Pulse Coded Modulation (PCM) signals. DMIC can be viewed as a PDM
13 receiver.
14
15maintainers:
16 - Jon Hunter <jonathanh@nvidia.com>
17 - Sameer Pujar <spujar@nvidia.com>
18
19allOf:
20 - $ref: dai-common.yaml#
21
22properties:
23 $nodename:
24 pattern: "^dmic@[0-9a-f]*$"
25
26 compatible:
27 oneOf:
28 - const: nvidia,tegra210-dmic
29 - items:
30 - enum:
31 - nvidia,tegra264-dmic
32 - nvidia,tegra234-dmic
33 - nvidia,tegra194-dmic
34 - nvidia,tegra186-dmic
35 - const: nvidia,tegra210-dmic
36
37 reg:
38 maxItems: 1
39
40 clocks:
41 maxItems: 1
42
43 clock-names:
44 const: dmic
45
46 assigned-clocks:
47 maxItems: 1
48
49 assigned-clock-parents:
50 maxItems: 1
51
52 assigned-clock-rates:
53 maxItems: 1
54
55 sound-name-prefix:
56 pattern: "^DMIC[1-9]$"
57
58 ports:
59 $ref: /schemas/graph.yaml#/properties/ports
60 properties:
61 port@0:
62 $ref: audio-graph-port.yaml#
63 unevaluatedProperties: false
64 description: |
65 DMIC ACIF (Audio Client Interface) port connected to the
66 corresponding AHUB (Audio Hub) ACIF port.
67
68 port@1:
69 $ref: audio-graph-port.yaml#
70 unevaluatedProperties: false
71 description: |
72 DMIC DAP (Digital Audio Port) interface which can be connected
73 to external audio codec for capture.
74
75required:
76 - compatible
77 - reg
78 - clocks
79 - clock-names
80 - assigned-clocks
81 - assigned-clock-parents
82
83additionalProperties: false
84
85examples:
86 - |
87 #include<dt-bindings/clock/tegra210-car.h>
88
89 dmic@702d4000 {
90 compatible = "nvidia,tegra210-dmic";
91 reg = <0x702d4000 0x100>;
92 clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
93 clock-names = "dmic";
94 assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
95 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
96 assigned-clock-rates = <3072000>;
97 sound-name-prefix = "DMIC1";
98 };
99
100...