# Copyright (c) 2019, Song Qiang <songqiang1304521@gmail.com>
# SPDX-License-Identifier: Apache-2.0

description: STM32 DMA controller

compatible: "st,stm32-dma"

include: dma-controller.yaml

properties:
    reg:
      required: true

    interrupts:
      required: true

    st,mem2mem:
      type: boolean
      description: If the DMA controller V1 supports memory to memory transfer

    "#dma-cells":
      const: 4

# Parameter syntax of stm32 follows the dma client dts syntax
# in the Linux kernel declared in
# https://git.kernel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git/plain/Bindings/dma/stm32-dma.txt
#
# channel: DMA channel
# slot: DMA stream of the DMA channel for DMA V1 or for DMA V2 with MUX peripheral request else NA
# channel-config: configuration of the selected DMA channel
# features: fifo threshold if relevant for DMA V1 or TBD for DMA V2

dma-cells:
  - channel
  - slot
  - channel-config
  - features