nxp,lpc-dma

Vendor: NXP Semiconductors

Note

An implementation of a driver matching this compatible is available in drivers/dma/dma_mcux_lpc.c.

Description

These nodes are “dma” bus nodes.

NXP LPC DMA controller

Properties

Properties not inherited from the base binding file.

Name

Type

Details

#dma-cells

int

Number of items to expect in a DMA 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-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.

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.

nxp,dma-num-of-otrigs

int

Number of Inputmux connections a DMA channel can receive from

nxp,dma-otrig-base-address

int

Address used when listening to Inputmux DMA signals

nxp,dma-itrig-base-address

int

DMA Channel Selection Address used for receiving signals

Specifier cell names

  • dma cells: channel