1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/fsl,easrc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP Asynchronous Sample Rate Converter (ASRC) Controller
maintainers:
- Shengjiu Wang <shengjiu.wang@nxp.com>
properties:
$nodename:
pattern: "^easrc@.*"
compatible:
const: fsl,imx8mn-easrc
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: Peripheral clock
clock-names:
items:
- const: mem
dmas:
maxItems: 8
dma-names:
items:
- const: ctx0_rx
- const: ctx0_tx
- const: ctx1_rx
- const: ctx1_tx
- const: ctx2_rx
- const: ctx2_tx
- const: ctx3_rx
- const: ctx3_tx
firmware-name:
allOf:
- $ref: /schemas/types.yaml#/definitions/string
- const: imx/easrc/easrc-imx8mn.bin
description: The coefficient table for the filters
fsl,asrc-rate:
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- minimum: 8000
- maximum: 192000
description: Defines a mutual sample rate used by DPCM Back Ends
fsl,asrc-format:
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [2, 6, 10, 32, 36]
default: 2
description:
Defines a mutual sample format used by DPCM Back Ends
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
- dmas
- dma-names
- firmware-name
- fsl,asrc-rate
- fsl,asrc-format
examples:
- |
#include <dt-bindings/clock/imx8mn-clock.h>
easrc: easrc@300c0000 {
compatible = "fsl,imx8mn-easrc";
reg = <0x0 0x300c0000 0x0 0x10000>;
interrupts = <0x0 122 0x4>;
clocks = <&clk IMX8MN_CLK_ASRC_ROOT>;
clock-names = "mem";
dmas = <&sdma2 16 23 0> , <&sdma2 17 23 0>,
<&sdma2 18 23 0> , <&sdma2 19 23 0>,
<&sdma2 20 23 0> , <&sdma2 21 23 0>,
<&sdma2 22 23 0> , <&sdma2 23 23 0>;
dma-names = "ctx0_rx", "ctx0_tx",
"ctx1_rx", "ctx1_tx",
"ctx2_rx", "ctx2_tx",
"ctx3_rx", "ctx3_tx";
firmware-name = "imx/easrc/easrc-imx8mn.bin";
fsl,asrc-rate = <8000>;
fsl,asrc-format = <2>;
};
|
