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TDA4VM: VPAC DMPAC and C6X/C7X using issue

Cherry Zhou
Mastermind 22235 points
Part Number: TDA4VM

Hi team,

Here's an issue from the customer may need your help:

Regarding the manual, "The VPAC works as front end to vision processing and prepares frame/scales for further processing by other vision Accelerators or processor cores in the SoC."

1) If VPAC and DMPAC are only accessible by the R5 core, does the vision processing and control of the camera input both require R5 core processing, and does the camera image perception of the ADAS function not work with the A72 core? That is, ADAS's vision-related processing is at the R5 core?

2) How to interface with the A72 core? How does the A72 core and R5 core work together?

Could you help check this case? Thanks.

Best Regards,

Cherry

  • 0
    TI__Guru**** 452265 points

    Hi Cherry Zhou,

    Please find below answers to your questions.

    Cherry Zhou said:
    1) If VPAC and DMPAC are only accessible by the R5 core, does the vision processing and control of the camera input both require R5 core processing, and does the camera image perception of the ADAS function not work with the A72 core? That is, ADAS's vision-related processing is at the R

    Yes, R5F core is must, VPAC and DMPAC are controlled/accessible only on R5F. 

    Cherry Zhou said:
    2) How to interface with the A72 core? How does the A72 core and R5 core work together?

    Are you using OpenVX framework? Because all this is taken care by the OpenVX framework. In OpenVX, graph runs on the A72 and Graph on A72 invokes the VPAC node on R5F whenever required, using IPC.  

    Regards,

    Brijesh