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TDA4VM: Is there any solution for early boot?

Yousik Kim
Intellectual 530 points
Part Number: TDA4VM
Other Parts Discussed in Thread: TDA2

Is there any solution for early boot?


I'm checking up TDA4VM PSDKRA and PSDKLA.
I want the same as early boot solution in VISION SDK of TDA2.

The below functions are that I applied in TDA2.
1. Receive video from camera.
2. Make and display surround view.
3. Start H.264 encoding and store the encoded data in DRAM during booting.
4. Run QT after booting linux and display QT gui using DispDistSrc link.

The functions 1, 2 and 3 are executed in 4 or 5 seconds.
Of course, these are executed in IPU before booting linux.

If there are solution, patch, or guide for above functions, let me know that.

Best Regards,
Yousik Kim.

  • 0
    TI__Guru**** 451155 points

    Hi Yousik Kim,

    1 and 2 should be possible in less than 4 to 5 seconds. Let me check and get back to you on this.

    Regards,

    Brijesh 

  • 0 in reply to Brijesh Jadav
    TI__Guru**** 451155 points

    Hi Yousik Kim,

    3 and 4 seems to be tough to achieve, since these features require Linux to be up..

    Regards,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Intellectual 530 points

    Hi Brijesh,

    Thank you for your reply.
    I understood about 3 and 4.

    I want to apply even 1 and 2.
    But currently in SDK, it is possible after booting linux.
    I think below contents are needed.

    1. mcu2_0 must be OpenVX host and has to manage shared memory before booting linux.
    2. OpenVX host must be changed from mcu2_0 to mpu and mpu has to manage shared memory after booting linux.

    Could you provide the guide to apply that?

  • 0 in reply to Yousik Kim
    TI__Guru**** 451155 points

    Hi,

    I think you dont really require to move OpenVX Host to R5F. 

    If you use 

    1, SBL to boot Linux

    2, use OSPI boot mode

    3, use eMMC for filesystem storage.

    4, Remove/disable unnecessary modules

    5, Limit logging in Linux

    You should be able to achieve first frame to display in 4 seconds.

    I will let my colleague to provide more information on this.

    Regards,

    Brijesh