blob: 2ce3b9c6eca25cc5ab60673d334398cb2d366cbb [file] [log] [blame]
# 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
interrupts:
required: true
dma-channels:
required: true
dma-requests:
required: true
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
"#dma-cells":
type: int
required: true
description: Number of items to expect in a DMAMUX specifier
# Parameter syntax of NXP follows the dmamux client dts syntax
# in the Linux kernel declared in
# https://git.kernel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git/tree/Bindings/dma/fsl-edma.txt
#
# - #dma-cells : Must be <2>.
# The 1st cell specifies the DMAMUX(0 for DMAMUX0 and 1 for DMAMUX1).
# Specific request source can only be multiplexed by specific channels
# group called DMAMUX.
# The 2nd cell specifies the request source(slot) ID.
# See the SoC's reference manual for all the supported request sources.
# * DMA clients
# DMA client drivers that uses the DMA function must use the format described
# in the dma.txt file, using a two-cell specifier for each channel: the 1st
# specifies the channel group(DMAMUX) in which this request can be multiplexed,
# and the 2nd specifies the request source.
dma-cells:
- mux
- source