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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/dma/loongson,ls1b-apbdma.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/dma/loongson,ls1b-apbdma.yaml#

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

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title: Loongson-1 APB DMA Controller

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maintainers:

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  - Keguang Zhang <keguang.zhang@gmail.com>

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description:

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  Loongson-1 APB DMA controller provides 3 independent channels for

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  peripherals such as NAND, audio playback and capture.

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properties:

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  compatible:

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    oneOf:

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      - const: loongson,ls1b-apbdma

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      - items:

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          - enum:

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              - loongson,ls1a-apbdma

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              - loongson,ls1c-apbdma

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          - const: loongson,ls1b-apbdma

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  reg:

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    maxItems: 1

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  interrupts:

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    items:

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      - description: NAND interrupt

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      - description: Audio playback interrupt

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      - description: Audio capture interrupt

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  interrupt-names:

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    items:

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      - const: ch0

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      - const: ch1

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      - const: ch2

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  '#dma-cells':

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    const: 1

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required:

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  - compatible

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  - reg

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  - interrupts

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  - interrupt-names

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  - '#dma-cells'

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additionalProperties: false

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examples:

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  - |

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    #include <dt-bindings/interrupt-controller/irq.h>

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    dma-controller@1fd01160 {

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        compatible = "loongson,ls1b-apbdma";

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        reg = <0x1fd01160 0x4>;

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        interrupt-parent = <&intc0>;

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        interrupts = <13 IRQ_TYPE_EDGE_RISING>,

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                     <14 IRQ_TYPE_EDGE_RISING>,

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                     <15 IRQ_TYPE_EDGE_RISING>;

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        interrupt-names = "ch0", "ch1", "ch2";

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        #dma-cells = <1>;

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    };

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