2023-08-30 17:31:07 +02:00
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/snps,designware-i2s.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: DesignWare I2S controller
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maintainers:
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- Jose Abreu <joabreu@synopsys.com>
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properties:
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compatible:
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oneOf:
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- items:
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- const: canaan,k210-i2s
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- const: snps,designware-i2s
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- enum:
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- snps,designware-i2s
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reg:
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maxItems: 1
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interrupts:
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description: |
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The interrupt line number for the I2S controller. Add this
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parameter if the I2S controller that you are using does not
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support DMA.
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maxItems: 1
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clocks:
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description: Sampling rate reference clock
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maxItems: 1
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clock-names:
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const: i2sclk
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resets:
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2023-10-24 12:59:35 +02:00
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items:
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- description: Optional controller resets
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2023-08-30 17:31:07 +02:00
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dmas:
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items:
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- description: TX DMA Channel
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- description: RX DMA Channel
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minItems: 1
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dma-names:
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items:
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- const: tx
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- const: rx
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minItems: 1
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allOf:
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- $ref: dai-common.yaml#
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- if:
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properties:
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compatible:
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contains:
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const: canaan,k210-i2s
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then:
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properties:
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"#sound-dai-cells":
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const: 1
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else:
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properties:
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"#sound-dai-cells":
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const: 0
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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oneOf:
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- required:
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- dmas
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- dma-names
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- required:
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- interrupts
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unevaluatedProperties: false
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examples:
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- |
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soc_i2s: i2s@7ff90000 {
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compatible = "snps,designware-i2s";
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reg = <0x7ff90000 0x1000>;
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clocks = <&scpi_i2sclk 0>;
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clock-names = "i2sclk";
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#sound-dai-cells = <0>;
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dmas = <&dma0 5>;
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dma-names = "tx";
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};
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