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TDA4VM: How to use UDMA copy in linux on A72 core?

Part Number: TDA4VM

Hi, TI Experts,

    In my openvx application, the tivxCaptureNode is running in a separate camera graph, and other nodes such as ldc node and tidl node is running in another graph.

I want ldc node to use the images captured by tivxCaptureNode, but I don't want to use memcpy to copy data because it's slow and will cause the A72 loading to rise. 

I saw the code which used udma copy on the DSP, but I didn't find an example of using udma copy on the A72 core in the processor SDK.

More information for your reference:

1. The per image size is about 4.9MB.

2. processor sdk: ti-processor-sdk-rtos-j721e-evm-08_02_00_05

Thanks, I'm looking forward to your response.

Dian Luo