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nxp,mcux-edma

Vendor: NXP Semiconductors

Description

These nodes are “dma” bus nodes.

NXP MCUX EDMA controller

Properties

Properties not inherited from the base binding file.

Name

Type

Details

dma-channels

int

Number of DMA channels supported by the controller

This property is required.

dma-requests

int

Number of DMA request signals supported by the controller.

This property is required.

nxp,mem2mem

boolean

If the DMA controller supports memory to memory transfer

nxp,a_on

boolean

If the DMA controller supports always on

#dma-cells

int

Number of items to expect in a DMAMUX specifier

This property is required.

dma-channel-mask

int

Bitmask of available DMA channels in ascending order that are
not reserved by firmware and are available to the
kernel. i.e. first channel corresponds to LSB.

dma-buf-addr-alignment

int

Memory address alignment requirement for DMA buffers used by the controller.

dma-buf-size-alignment

int

Memory size alignment requirement for DMA buffers used by the controller.

dma-copy-alignment

int

Minimal chunk of data possible to be copied by the controller.

Specifier cell names

  • dma cells: mux, source