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dt-bindings: dmaengine: Convert Allwinner A31 and A64 DMA to a schema
The newer Allwinner SoCs have a DMA controller supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://lore.kernel.org/r/20190720092607.31095-3-maxime.ripard@bootlin.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Maxime Ripard
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Vinod Koul
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Jul 29, 2019
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Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
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# SPDX-License-Identifier: GPL-2.0 | ||
%YAML 1.2 | ||
--- | ||
$id: http://devicetree.org/schemas/dma/allwinner,sun50i-a64-dma.yaml# | ||
$schema: http://devicetree.org/meta-schemas/core.yaml# | ||
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title: Allwinner A64 DMA Controller Device Tree Bindings | ||
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maintainers: | ||
- Chen-Yu Tsai <wens@csie.org> | ||
- Maxime Ripard <maxime.ripard@bootlin.com> | ||
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allOf: | ||
- $ref: "dma-controller.yaml#" | ||
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properties: | ||
"#dma-cells": | ||
const: 1 | ||
description: The cell is the request line number. | ||
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compatible: | ||
enum: | ||
- allwinner,sun50i-a64-dma | ||
- allwinner,sun50i-h6-dma | ||
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reg: | ||
maxItems: 1 | ||
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interrupts: | ||
maxItems: 1 | ||
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clocks: | ||
minItems: 1 | ||
maxItems: 2 | ||
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clock-names: | ||
items: | ||
- const: bus | ||
- const: mbus | ||
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resets: | ||
maxItems: 1 | ||
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required: | ||
- "#dma-cells" | ||
- compatible | ||
- reg | ||
- interrupts | ||
- clocks | ||
- resets | ||
- dma-channels | ||
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if: | ||
properties: | ||
compatible: | ||
const: allwinner,sun50i-h6-dma | ||
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then: | ||
properties: | ||
clocks: | ||
maxItems: 2 | ||
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required: | ||
- clock-names | ||
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else: | ||
properties: | ||
clocks: | ||
maxItems: 1 | ||
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# FIXME: We should set it, but it would report all the generic | ||
# properties as additional properties. | ||
# additionalProperties: false | ||
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examples: | ||
- | | ||
dma: dma-controller@1c02000 { | ||
compatible = "allwinner,sun50i-a64-dma"; | ||
reg = <0x01c02000 0x1000>; | ||
interrupts = <0 50 4>; | ||
clocks = <&ccu 30>; | ||
dma-channels = <8>; | ||
dma-requests = <27>; | ||
resets = <&ccu 7>; | ||
#dma-cells = <1>; | ||
}; | ||
... |
62 changes: 62 additions & 0 deletions
62
Documentation/devicetree/bindings/dma/allwinner,sun6i-a31-dma.yaml
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# SPDX-License-Identifier: GPL-2.0 | ||
%YAML 1.2 | ||
--- | ||
$id: http://devicetree.org/schemas/dma/allwinner,sun6i-a31-dma.yaml# | ||
$schema: http://devicetree.org/meta-schemas/core.yaml# | ||
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title: Allwinner A31 DMA Controller Device Tree Bindings | ||
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maintainers: | ||
- Chen-Yu Tsai <wens@csie.org> | ||
- Maxime Ripard <maxime.ripard@bootlin.com> | ||
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allOf: | ||
- $ref: "dma-controller.yaml#" | ||
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properties: | ||
"#dma-cells": | ||
const: 1 | ||
description: The cell is the request line number. | ||
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compatible: | ||
oneOf: | ||
- const: allwinner,sun6i-a31-dma | ||
- const: allwinner,sun8i-a23-dma | ||
- const: allwinner,sun8i-a83t-dma | ||
- const: allwinner,sun8i-h3-dma | ||
- const: allwinner,sun8i-v3s-dma | ||
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reg: | ||
maxItems: 1 | ||
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interrupts: | ||
maxItems: 1 | ||
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clocks: | ||
maxItems: 1 | ||
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resets: | ||
maxItems: 1 | ||
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required: | ||
- "#dma-cells" | ||
- compatible | ||
- reg | ||
- interrupts | ||
- clocks | ||
- resets | ||
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additionalProperties: false | ||
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examples: | ||
- | | ||
dma: dma-controller@1c02000 { | ||
compatible = "allwinner,sun6i-a31-dma"; | ||
reg = <0x01c02000 0x1000>; | ||
interrupts = <0 50 4>; | ||
clocks = <&ahb1_gates 6>; | ||
resets = <&ahb1_rst 6>; | ||
#dma-cells = <1>; | ||
}; | ||
... |
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