xref: /linux/Documentation/devicetree/bindings/sound/fsl,easrc.yaml (revision 7a012a692e7cfbca245d195a80f23634d3d74fcc) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/fsl,easrc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NXP Asynchronous Sample Rate Converter (ASRC) Controller
8
9maintainers:
10  - Shengjiu Wang <shengjiu.wang@nxp.com>
11
12properties:
13  $nodename:
14    pattern: "^easrc@.*"
15
16  compatible:
17    oneOf:
18      - enum:
19          - fsl,imx8mn-easrc
20      - items:
21          - enum:
22              - fsl,imx8mp-easrc
23          - const: fsl,imx8mn-easrc
24
25  reg:
26    maxItems: 1
27
28  interrupts:
29    maxItems: 1
30
31  clocks:
32    items:
33      - description: Peripheral clock
34
35  clock-names:
36    items:
37      - const: mem
38
39  dmas:
40    maxItems: 8
41
42  dma-names:
43    items:
44      - const: ctx0_rx
45      - const: ctx0_tx
46      - const: ctx1_rx
47      - const: ctx1_tx
48      - const: ctx2_rx
49      - const: ctx2_tx
50      - const: ctx3_rx
51      - const: ctx3_tx
52
53  firmware-name:
54    items:
55      - const: imx/easrc/easrc-imx8mn.bin
56    description: The coefficient table for the filters
57
58  fsl,asrc-rate:
59    $ref: /schemas/types.yaml#/definitions/uint32
60    minimum: 8000
61    maximum: 192000
62    description: Defines a mutual sample rate used by DPCM Back Ends
63
64  fsl,asrc-format:
65    $ref: /schemas/types.yaml#/definitions/uint32
66    enum: [2, 6, 10, 32, 36]
67    default: 2
68    description:
69      Defines a mutual sample format used by DPCM Back Ends
70
71required:
72  - compatible
73  - reg
74  - interrupts
75  - clocks
76  - clock-names
77  - dmas
78  - dma-names
79  - firmware-name
80  - fsl,asrc-rate
81  - fsl,asrc-format
82
83allOf:
84  - $ref: dai-common.yaml#
85
86unevaluatedProperties: false
87
88examples:
89  - |
90    #include <dt-bindings/clock/imx8mn-clock.h>
91
92    easrc: easrc@300c0000 {
93        compatible = "fsl,imx8mn-easrc";
94        reg = <0x300c0000 0x10000>;
95        interrupts = <0x0 122 0x4>;
96        clocks = <&clk IMX8MN_CLK_ASRC_ROOT>;
97        clock-names = "mem";
98        dmas = <&sdma2 16 23 0> , <&sdma2 17 23 0>,
99               <&sdma2 18 23 0> , <&sdma2 19 23 0>,
100               <&sdma2 20 23 0> , <&sdma2 21 23 0>,
101               <&sdma2 22 23 0> , <&sdma2 23 23 0>;
102        dma-names = "ctx0_rx", "ctx0_tx",
103                    "ctx1_rx", "ctx1_tx",
104                    "ctx2_rx", "ctx2_tx",
105                    "ctx3_rx", "ctx3_tx";
106        firmware-name = "imx/easrc/easrc-imx8mn.bin";
107        fsl,asrc-rate  = <8000>;
108        fsl,asrc-format = <2>;
109    };
110