| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: NXP Asynchronous Sample Rate Converter (ASRC) Controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Shengjiu Wang <shengjiu.wang@nxp.com> |
| 11 | |
| 12 | properties: |
| 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 | $ref: /schemas/types.yaml#/definitions/string |
| 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 | |
| 71 | required: |
| 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 | |
| 83 | additionalProperties: false |
| 84 | |
| 85 | examples: |
| 86 | - | |
| 87 | #include <dt-bindings/clock/imx8mn-clock.h> |
| 88 | |
| 89 | easrc: easrc@300c0000 { |
| 90 | compatible = "fsl,imx8mn-easrc"; |
| 91 | reg = <0x300c0000 0x10000>; |
| 92 | interrupts = <0x0 122 0x4>; |
| 93 | clocks = <&clk IMX8MN_CLK_ASRC_ROOT>; |
| 94 | clock-names = "mem"; |
| 95 | dmas = <&sdma2 16 23 0> , <&sdma2 17 23 0>, |
| 96 | <&sdma2 18 23 0> , <&sdma2 19 23 0>, |
| 97 | <&sdma2 20 23 0> , <&sdma2 21 23 0>, |
| 98 | <&sdma2 22 23 0> , <&sdma2 23 23 0>; |
| 99 | dma-names = "ctx0_rx", "ctx0_tx", |
| 100 | "ctx1_rx", "ctx1_tx", |
| 101 | "ctx2_rx", "ctx2_tx", |
| 102 | "ctx3_rx", "ctx3_tx"; |
| 103 | firmware-name = "imx/easrc/easrc-imx8mn.bin"; |
| 104 | fsl,asrc-rate = <8000>; |
| 105 | fsl,asrc-format = <2>; |
| 106 | }; |