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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/dma/cirrus,ep9301-dma-m2m.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/cirrus,ep9301-dma-m2m.yaml#

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

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title: Cirrus Logic ep93xx SoC DMA controller

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maintainers:

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  - Alexander Sverdlin <alexander.sverdlin@gmail.com>

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  - Nikita Shubin <nikita.shubin@maquefel.me>

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allOf:

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  - $ref: dma-controller.yaml#

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properties:

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  compatible:

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    oneOf:

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      - const: cirrus,ep9301-dma-m2m

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      - items:

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          - enum:

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              - cirrus,ep9302-dma-m2m

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              - cirrus,ep9307-dma-m2m

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              - cirrus,ep9312-dma-m2m

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              - cirrus,ep9315-dma-m2m

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          - const: cirrus,ep9301-dma-m2m

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  reg:

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    items:

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      - description: m2m0 channel registers

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      - description: m2m1 channel registers

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  clocks:

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    items:

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      - description: m2m0 channel gate clock

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      - description: m2m1 channel gate clock

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  clock-names:

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    items:

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      - const: m2m0

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      - const: m2m1

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  interrupts:

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    items:

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      - description: m2m0 channel interrupt

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      - description: m2m1 channel interrupt

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  '#dma-cells':

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    const: 2

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    description: |

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      The first cell is the unique device channel number as indicated by this

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      table for ep93xx:

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      10: SPI controller

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      11: IDE controller

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      The second cell is the DMA direction line number:

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      1: Memory to device

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      2: Device to memory

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required:

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  - compatible

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  - reg

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  - clocks

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  - clock-names

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  - interrupts

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additionalProperties: false

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examples:

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  - |

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    #include <dt-bindings/clock/cirrus,ep9301-syscon.h>

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    dma-controller@80000100 {

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        compatible = "cirrus,ep9301-dma-m2m";

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        reg = <0x80000100 0x0040>,

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              <0x80000140 0x0040>;

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        clocks = <&syscon EP93XX_CLK_M2M0>,

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                 <&syscon EP93XX_CLK_M2M1>;

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        clock-names = "m2m0", "m2m1";

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        interrupt-parent = <&vic0>;

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        interrupts = <17>, <18>;

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        #dma-cells = <2>;

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    };

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