Regarding DMA transfer in imx6Quad AI board

[srilakshmikanag]

Hi,

We are using i.mx6Quad - We want to setup DMA transfer from memory to memory, please let us know which DMA can be used for this purpose. Also please tell us if there is any way to setup the DMA from ARM side user space program.

Please let me know.
Thanks in advance.

Regards,
Srilakshmi

[Yuri · Accepted solution]

According to Table A-1 (SDMA Scripts Overview) of the i.MX6 (Q) Reference Manual,

script ap_2_ap may be used for memory copy.

In the same time, standard ARM approach is using block copy instructions LDM / STM (or NEON VLD / VST),

which are very effective. I recommend it.

https://community.freescale.com/message/322677#322677

https://community.freescale.com/message/260276#260276