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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
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# SPDX-License-Identifier: GPL-2.0

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/dma/allwinner,sun50i-a64-dma.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Allwinner A64 DMA Controller

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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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allOf:

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  - $ref: dma-controller.yaml#

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properties:

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  "#dma-cells":

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    const: 1

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    description: The cell is the request line number.

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  compatible:

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    oneOf:

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      - enum:

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          - allwinner,sun20i-d1-dma

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          - allwinner,sun50i-a64-dma

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          - allwinner,sun50i-a100-dma

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          - allwinner,sun50i-h6-dma

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      - items:

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          - const: allwinner,sun8i-r40-dma

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          - const: allwinner,sun50i-a64-dma

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      - items:

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          - const: allwinner,sun50i-h616-dma

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          - const: allwinner,sun50i-a100-dma

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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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    minItems: 1

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    maxItems: 2

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  clock-names:

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    items:

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      - const: bus

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      - const: mbus

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  resets:

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    maxItems: 1

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required:

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  - "#dma-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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  - resets

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  - dma-channels

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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,sun20i-d1-dma

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          - allwinner,sun50i-a100-dma

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          - allwinner,sun50i-h6-dma

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then:

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  properties:

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    clocks:

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      minItems: 2

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  required:

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    - clock-names

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else:

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  properties:

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    clocks:

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      maxItems: 1

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unevaluatedProperties: false

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examples:

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  - |

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    dma: dma-controller@1c02000 {

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        compatible = "allwinner,sun50i-a64-dma";

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        reg = <0x01c02000 0x1000>;

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        interrupts = <0 50 4>;

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        clocks = <&ccu 30>;

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        dma-channels = <8>;

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        dma-requests = <27>;

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        resets = <&ccu 7>;

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        #dma-cells = <1>;

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    };

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...

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