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