Commit fa805360 authored by Green Wan's avatar Green Wan Committed by Vinod Koul
Browse files

dt-bindings: dmaengine: sf-pdma: add bindins for SiFive PDMA 



Add DT bindings document for Platform DMA(PDMA) driver of board,
HiFive Unleashed Rev A00.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarPragnesh Patel <pragnesh.patel@sifive.com>
Signed-off-by: default avatarGreen Wan <green.wan@sifive.com>
Link: https://lore.kernel.org/r/20191107084955.7580-2-green.wan@sifive.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 5c5332a6

Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml

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# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/dma/sifive,fu540-c000-pdma.yaml#

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



title: SiFive Unleashed Rev C000 Platform DMA



maintainers:

  - Green Wan <green.wan@sifive.com>

  - Palmer Debbelt <palmer@sifive.com>

  - Paul Walmsley <paul.walmsley@sifive.com>



description: |

  Platform DMA is a DMA engine of SiFive Unleashed. It supports 4

  channels. Each channel has 2 interrupts. One is for DMA done and

  the other is for DME error.



  In different SoC, DMA could be attached to different IRQ line.

  DT file need to be changed to meet the difference. For technical

  doc,



  https://static.dev.sifive.com/FU540-C000-v1.0.pdf



properties:

  compatible:

    items:

      - const: sifive,fu540-c000-pdma



  reg:

    maxItems: 1



  interrupts:

    minItems: 1

    maxItems: 8



  '#dma-cells':

    const: 1



required:

  - compatible

  - reg

  - interrupts

  - '#dma-cells'



examples:

  - |

    dma@3000000 {

      compatible = "sifive,fu540-c000-pdma";

      reg = <0x0 0x3000000 0x0 0x8000>;

      interrupts = <23 24 25 26 27 28 29 30>;

      #dma-cells = <1>;

    };



...