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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/dma/arm,pl330.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/arm,pl330.yaml#

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

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title: ARM PrimeCell PL330 DMA Controller

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maintainers:

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  - Vinod Koul <vkoul@kernel.org>

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description:

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  The ARM PrimeCell PL330 DMA controller can move blocks of memory contents

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  between memory and peripherals or memory to memory.

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# We need a select here so we don't match all nodes with 'arm,primecell'

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select:

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  properties:

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    compatible:

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      contains:

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        const: arm,pl330

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  required:

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    - compatible

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allOf:

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  - $ref: dma-controller.yaml#

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  - $ref: /schemas/arm/primecell.yaml#

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properties:

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  compatible:

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    items:

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      - enum:

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          - arm,pl330

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      - const: arm,primecell

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  reg:

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    maxItems: 1

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  interrupts:

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    minItems: 1

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    maxItems: 32

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    description: A single combined interrupt or an interrupt per event

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  '#dma-cells':

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    const: 1

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    description: Contains the DMA request number for the consumer

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  arm,pl330-broken-no-flushp:

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    type: boolean

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    description: quirk for avoiding to execute DMAFLUSHP

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  arm,pl330-periph-burst:

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    type: boolean

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    description: quirk for performing burst transfer only

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  dma-coherent: true

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  iommus:

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    minItems: 1

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    maxItems: 9

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    description: Up to 1 IOMMU entry per DMA channel for writes and 1

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      IOMMU entry for reads.

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  power-domains:

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    maxItems: 1

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  resets:

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    minItems: 1

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    maxItems: 2

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  reset-names:

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    minItems: 1

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    items:

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      - const: dma

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      - const: dma-ocp

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required:

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  - compatible

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  - reg

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  - interrupts

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unevaluatedProperties: false

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examples:

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  - |

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    dma-controller@12680000 {

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        compatible = "arm,pl330", "arm,primecell";

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        reg = <0x12680000 0x1000>;

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        interrupts = <99>;

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        #dma-cells = <1>;

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    };

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...

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