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]$"
56 !! 52 $ref: /schemas/types.yaml#/definitions/string
57 ports: !! 53 description:
58 $ref: /schemas/graph.yaml#/properties/port !! 54 used as prefix for sink/source names of the component. Must be a
59 properties: !! 55 unique string among multiple instances of the same component.
60 port@0: !! 56 The name can be "DMIC1" or "DMIC2" ... "DMICx", where x depends
61 $ref: audio-graph-port.yaml# !! 57 on the maximum available instances on a Tegra SoC.
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 58
74 required: 59 required:
75 - compatible 60 - compatible
76 - reg 61 - reg
77 - clocks 62 - clocks
78 - clock-names 63 - clock-names
79 - assigned-clocks 64 - assigned-clocks
80 - assigned-clock-parents 65 - assigned-clock-parents
81 <<
82 additionalProperties: false <<
83 66
84 examples: 67 examples:
85 - | 68 - |
86 #include<dt-bindings/clock/tegra210-car.h> 69 #include<dt-bindings/clock/tegra210-car.h>
87 70
88 dmic@702d4000 { 71 dmic@702d4000 {
89 compatible = "nvidia,tegra210-dmic"; 72 compatible = "nvidia,tegra210-dmic";
90 reg = <0x702d4000 0x100>; 73 reg = <0x702d4000 0x100>;
91 clocks = <&tegra_car TEGRA210_CLK_DMIC 74 clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
92 clock-names = "dmic"; 75 clock-names = "dmic";
93 assigned-clocks = <&tegra_car TEGRA210 76 assigned-clocks = <&tegra_car TEGRA210_CLK_DMIC1>;
94 assigned-clock-parents = <&tegra_car T 77 assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
95 assigned-clock-rates = <3072000>; 78 assigned-clock-rates = <3072000>;
96 sound-name-prefix = "DMIC1"; 79 sound-name-prefix = "DMIC1";
97 }; 80 };
98 81
99 ... 82 ...
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