dts/bindings/dma/nxp,mcux-edma.yaml

# Copyright (c) 2020, NXP
# SPDX-License-Identifier: Apache-2.0

description: NXP MCUX EDMA controller

compatible: "nxp,mcux-edma"

include: dma-controller.yaml

properties:
  reg:
    required: true
    description: |
      Specifies base physical address(s) and size of DMA and respective DMAMUX register(s)
      that routes DMA sources

  interrupts:
    required: true

  dma-channels:
    required: true

  dma-requests:
    required: true

  dmamux-reg-offset:
    type: int
    default: 0
    description:
      The offset value for obtaining DMAMUX register index from DMAMUX channel.
      Default value means DMAMUX channel is identical with DMAMUX register index

  channel-gap:
    type: array
    description: |
      On some platforms, there may be a gap in the channels and
      this array specifies the start and end of a single gap

  nxp,mem2mem:
    type: boolean
    description: If the DMA controller supports memory to memory transfer

  nxp,a_on:
    type: boolean
    description: If the DMA controller supports always on

  irq-shared-offset:
    type: int
    default: 0
    description: |
      Describes an offset between two channels share the same interrupt entry.
      Default value means each channel has separate interrupt entry.

  no-error-irq:
    type: boolean
    description: |
      If the SoCs don't have a separate interrupt id for error IRQ.

  nxp,version:
    type: int
    enum:
      - 2
      - 3
      - 4
    description: |
      eDMA IP revision number.

  "#dma-cells":
    type: int
    required: true
    description: Number of items to expect in a DMAMUX specifier

# - #dma-cells : Must be <2>.
#  The 1st cell specifies the DMA channel which will be used
#  The 2nd cell specifies the request source (slot) ID.
#    See the SoC's reference manual for all the supported request sources.

dma-cells:
  - mux
  - source