TDA2SG: [Linux] using EDMA from user space

Luke Lin

Part Number: TDA2SG

Dear Champs,

My customer is using Processor SDK Vision (Linux) v3.2 on TDA2x. Their user space program would like to use EDMA to speed up buffer copy. I checked E2E, found a related post below.

The post mentioned there is only kernel space driver for EDMA. User space driver is not available. However, the post is for AM57x, I'm wondering if the SDK for TDA2x(DRA7x) has the same limitation. Could you help confirm?

If there is really no EDMA user space driver available, could you suggest some alternative ways to utilize EDMA from user space?

Thanks!

over 7 years ago

0 Santhana Bharathi N1 over 7 years ago

TI__Prodigy 500 points

Hi Luke,

As mentioned in the other thread the EDMA driver APIs are meant to be used only in the kernel space. This suits for TDA2x(DRA7x) as well.

If you really want to use EDMA in the application, then build the application as a kernel space module.

Regards

Santhana Bharathi

0 Luke Lin over 7 years ago in reply to Santhana Bharathi N1

TI__Expert 3250 points

Hi, Santhana

Thanks for your confirmation.

Regards,

Luke Lin

Processors

Processors forum

TDA2SG: [Linux] using EDMA from user space