xref: /freebsd/sys/contrib/device-tree/Bindings/dma/sifive,fu540-c000-pdma.yaml (revision e67e85659c0de33e617e5fbf1028c6e8b49eee53)

# 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'

additionalProperties: false

examples:
  - |
    dma@3000000 {
      compatible = "sifive,fu540-c000-pdma";
      reg = <0x3000000 0x8000>;
      interrupts = <23>, <24>, <25>, <26>, <27>, <28>, <29>, <30>;
      #dma-cells = <1>;
    };

...