# 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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$id: http://devicetree.org/schemas/sound/allwinner,sun4i-a10-i2s.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Allwinner A10 I2S Controller Device Tree Bindings
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maintainers:
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- Chen-Yu Tsai <wens@csie.org>
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- Maxime Ripard <mripard@kernel.org>
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properties:
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"#sound-dai-cells":
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const: 0
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compatible:
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oneOf:
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- const: allwinner,sun4i-a10-i2s
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- const: allwinner,sun6i-a31-i2s
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- const: allwinner,sun8i-a83t-i2s
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- const: allwinner,sun8i-h3-i2s
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- const: allwinner,sun50i-a64-codec-i2s
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- items:
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- const: allwinner,sun50i-a64-i2s
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- const: allwinner,sun8i-h3-i2s
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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: Bus Clock
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- description: Module Clock
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clock-names:
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items:
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- const: apb
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- const: mod
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# Even though it only applies to subschemas under the conditionals,
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# not listing them here will trigger a warning because of the
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# additionalsProperties set to false.
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dmas: true
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dma-names: true
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resets:
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maxItems: 1
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allOf:
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- if:
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properties:
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compatible:
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contains:
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enum:
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- allwinner,sun6i-a31-i2s
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- allwinner,sun8i-a83t-i2s
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- allwinner,sun8i-h3-i2s
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- allwinner,sun50i-a64-codec-i2s
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then:
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required:
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- resets
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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: allwinner,sun8i-a83t-i2s
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then:
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properties:
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dmas:
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minItems: 1
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maxItems: 2
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items:
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- description: RX DMA Channel
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- description: TX DMA Channel
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description:
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Some controllers cannot receive but can only transmit
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data. In such a case, the RX DMA channel is to be omitted.
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dma-names:
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oneOf:
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- items:
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- const: rx
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- const: tx
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- const: tx
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description:
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Some controllers cannot receive but can only transmit
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data. In such a case, the RX name is to be omitted.
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else:
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properties:
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dmas:
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items:
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- description: RX DMA Channel
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- description: TX DMA Channel
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dma-names:
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items:
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- const: rx
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- const: tx
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required:
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- "#sound-dai-cells"
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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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additionalProperties: false
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examples:
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- |
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i2s0: i2s@1c22400 {
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#sound-dai-cells = <0>;
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compatible = "allwinner,sun4i-a10-i2s";
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reg = <0x01c22400 0x400>;
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interrupts = <0 16 4>;
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clocks = <&apb0_gates 3>, <&i2s0_clk>;
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clock-names = "apb", "mod";
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dmas = <&dma 0 3>, <&dma 0 3>;
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dma-names = "rx", "tx";
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};
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...
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