| # 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>; |
| }; |
