silabs,siwx91x-dma

Vendor: Silicon Laboratories

Note

An implementation of a driver matching this compatible is available in drivers/dma/dma_silabs_siwx91x.c.

Description

These nodes are “dma” bus nodes.

Silabs SiWx91x DMA

Properties

Properties not inherited from the base binding file.

Name

Type

Details

silabs,sram-region

phandle

SRAM Address for UDMA Descriptor Storage. Some instance require this
buffer to be placed in a specific area. If the instance doesn't have
this requirement, this attribute is not required and the memory will
will be automatically allocated.

#dma-cells

int

Number of items to expect in a DMA specifier

This property is required.

Constant value: 1

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