2018.2 Petalinux AXIDMA Config options

[pmccumber]

The notes suggest enabling these:

CONFIG_XILINX_AXIDMA=y
CONFIG_XILINX_AXIVDMA=y

I did not see these in the config file. What do these options do in the kernel? I intend to simply add them.

[pmccumber]

If these options are gone in 2018.2, how does that affect this driver?

[xmentos]

You could use petalinux-config -c kernel to activate these

[pmccumber]

Yes. That's what I did. Those options still are not present in the version we are using (2018.2). There are analogous ones but was curious how it might affect the driver.

[tpeshkin]

Seems these config options are obsolete, to allow DMA transfers enable following option:

menuconfig XILINX_DMA_ENGINES
bool "Xilinx DMA Engines"
help
Enable support for the Xilinx DMA controllers. It supports three DMA
engines: Axi Central DMA (memory to memory transfer), Axi DMA (memory and
device transfer), and Axi VDMA (memory and video device transfer).

[honorpeter]

menuconfig XILINX_DMA_ENGINES
@tpeshkin But how to do and in where place ?

[tpeshkin]

petalinux-config -c kernel
Device Drivers ---> [ * ] DMA Engine support ---> [ * ] Xilinx DMA Engines