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,tegra186-asrc.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Tegra186 ASRC 7 title: Tegra186 ASRC
8 8
9 description: | 9 description: |
10 Asynchronous Sample Rate Converter (ASRC) co 10 Asynchronous Sample Rate Converter (ASRC) converts the sampling frequency
11 of the input signal from one frequency to an 11 of the input signal from one frequency to another. It can handle over a
12 wide range of sample rate ratios (freq_in/fr 12 wide range of sample rate ratios (freq_in/freq_out) from 1:24 to 24:1.
13 ASRC has two modes of operation. One where r 13 ASRC has two modes of operation. One where ratio can be programmed in SW
14 and the other where it gets the information 14 and the other where it gets the information from ratio estimator module.
15 15
16 It supports sample rate conversions in the 16 It supports sample rate conversions in the range of 8 to 192 kHz and
17 supports 6 streams upto 12 total channels. T 17 supports 6 streams upto 12 total channels. The input data size can be
18 16, 24 and 32 bits. 18 16, 24 and 32 bits.
19 19
20 maintainers: 20 maintainers:
21 - Jon Hunter <jonathanh@nvidia.com> 21 - Jon Hunter <jonathanh@nvidia.com>
22 - Mohan Kumar <mkumard@nvidia.com> 22 - Mohan Kumar <mkumard@nvidia.com>
23 - Sameer Pujar <spujar@nvidia.com> 23 - Sameer Pujar <spujar@nvidia.com>
24 24
25 allOf: 25 allOf:
26 - $ref: dai-common.yaml# 26 - $ref: dai-common.yaml#
27 27
28 properties: 28 properties:
29 $nodename: 29 $nodename:
30 pattern: "^asrc@[0-9a-f]*$" 30 pattern: "^asrc@[0-9a-f]*$"
31 31
32 compatible: 32 compatible:
33 oneOf: 33 oneOf:
34 - const: nvidia,tegra186-asrc 34 - const: nvidia,tegra186-asrc
35 - items: 35 - items:
36 - enum: 36 - enum:
37 - nvidia,tegra234-asrc 37 - nvidia,tegra234-asrc
38 - nvidia,tegra194-asrc 38 - nvidia,tegra194-asrc
39 - const: nvidia,tegra186-asrc 39 - const: nvidia,tegra186-asrc
40 40
41 reg: 41 reg:
42 maxItems: 1 42 maxItems: 1
43 43
44 sound-name-prefix: 44 sound-name-prefix:
45 pattern: "^ASRC[1-9]$" 45 pattern: "^ASRC[1-9]$"
46 46
47 ports: 47 ports:
48 $ref: /schemas/graph.yaml#/properties/port 48 $ref: /schemas/graph.yaml#/properties/ports
49 description: | 49 description: |
50 ASRC has seven input ports and six outpu 50 ASRC has seven input ports and six output ports. Accordingly ACIF
51 (Audio Client Interfaces) port nodes are 51 (Audio Client Interfaces) port nodes are defined to represent the
52 ASRC inputs (port 0 to 6) and outputs (p 52 ASRC inputs (port 0 to 6) and outputs (port 7 to 12). These are
53 connected to corresponding ports on AHUB 53 connected to corresponding ports on AHUB (Audio Hub). Additional
54 input (port 6) is for receiving ratio in 54 input (port 6) is for receiving ratio information from estimator.
55 55
56 patternProperties: 56 patternProperties:
57 '^port@[0-6]': 57 '^port@[0-6]':
58 $ref: audio-graph-port.yaml# 58 $ref: audio-graph-port.yaml#
59 unevaluatedProperties: false 59 unevaluatedProperties: false
60 description: ASRC ACIF input ports 60 description: ASRC ACIF input ports
61 '^port@[7-9]|1[1-2]': 61 '^port@[7-9]|1[1-2]':
62 $ref: audio-graph-port.yaml# 62 $ref: audio-graph-port.yaml#
63 unevaluatedProperties: false 63 unevaluatedProperties: false
64 description: ASRC ACIF output ports 64 description: ASRC ACIF output ports
65 65
66 required: 66 required:
67 - compatible 67 - compatible
68 - reg 68 - reg
69 69
70 additionalProperties: false 70 additionalProperties: false
71 71
72 examples: 72 examples:
73 - | 73 - |
74 74
75 asrc@2910000 { 75 asrc@2910000 {
76 compatible = "nvidia,tegra186-asrc"; 76 compatible = "nvidia,tegra186-asrc";
77 reg = <0x2910000 0x2000>; 77 reg = <0x2910000 0x2000>;
78 sound-name-prefix = "ASRC1"; 78 sound-name-prefix = "ASRC1";
79 }; 79 };
80 80
81 ... 81 ...
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