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atmel,sam-xdmac

Vendor: Atmel Corporation

Description

These nodes are “dma” bus nodes.

Atmel SAM XDMAC controller

Properties

Properties not inherited from the base binding file.

Name

Type

Details

peripheral-id

int

peripheral ID

This property is required.

#dma-cells

int

Number of items to expect in a DMA specifier

This property is required.

Constant value: 2

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

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.

Specifier cell names

  • dma cells: channel, perid