101 lines
2.3 KiB
YAML
101 lines
2.3 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/fsl,easrc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NXP Asynchronous Sample Rate Converter (ASRC) Controller
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maintainers:
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- Shengjiu Wang <shengjiu.wang@nxp.com>
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properties:
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$nodename:
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pattern: "^easrc@.*"
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compatible:
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const: fsl,imx8mn-easrc
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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items:
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- description: Peripheral clock
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clock-names:
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items:
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- const: mem
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dmas:
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maxItems: 8
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dma-names:
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items:
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- const: ctx0_rx
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- const: ctx0_tx
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- const: ctx1_rx
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- const: ctx1_tx
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- const: ctx2_rx
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- const: ctx2_tx
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- const: ctx3_rx
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- const: ctx3_tx
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firmware-name:
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$ref: /schemas/types.yaml#/definitions/string
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const: imx/easrc/easrc-imx8mn.bin
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description: The coefficient table for the filters
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fsl,asrc-rate:
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 8000
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maximum: 192000
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description: Defines a mutual sample rate used by DPCM Back Ends
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fsl,asrc-format:
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [2, 6, 10, 32, 36]
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default: 2
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description:
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Defines a mutual sample format used by DPCM Back Ends
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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- dmas
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- dma-names
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- firmware-name
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- fsl,asrc-rate
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- fsl,asrc-format
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/imx8mn-clock.h>
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easrc: easrc@300c0000 {
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compatible = "fsl,imx8mn-easrc";
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reg = <0x300c0000 0x10000>;
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interrupts = <0x0 122 0x4>;
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clocks = <&clk IMX8MN_CLK_ASRC_ROOT>;
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clock-names = "mem";
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dmas = <&sdma2 16 23 0> , <&sdma2 17 23 0>,
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<&sdma2 18 23 0> , <&sdma2 19 23 0>,
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<&sdma2 20 23 0> , <&sdma2 21 23 0>,
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<&sdma2 22 23 0> , <&sdma2 23 23 0>;
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dma-names = "ctx0_rx", "ctx0_tx",
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"ctx1_rx", "ctx1_tx",
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"ctx2_rx", "ctx2_tx",
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"ctx3_rx", "ctx3_tx";
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firmware-name = "imx/easrc/easrc-imx8mn.bin";
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fsl,asrc-rate = <8000>;
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fsl,asrc-format = <2>;
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};
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