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TDA4VM: could camera work in about 6 seconds?

wu peng
Prodigy 20 points

Part Number: TDA4VM

hi:

     our product has 4 2M camera and we want them work in 6 seconds.

     The sdk is linux + rtos. version is 8.1

      I think there's 3 ways to meet the requirement

      1. cpus in Main domain enter into standby mode, such as WFI.

           in this case, How much power consumption?

      2. cpus in Main domain enter into low power mode. Power to main domain is turned OFF.

           in this case, does the sdk8.1 support now? Is there any roadmap for the feature?

      3. TDA4 do cold boot as soon as possible

           is this any test data about  cold boot? after remove all debug feature, such as uart and so on.

Thanks

  • 0
    TI__Guru**** 167430 points

    Hi,

    This should be possible to get the camera in 6 Seconds. You will need to use SBL based boot flow to load the MCU2_0 firmware at the earliest.
    MCU2_0 firmware can be used to turn on the camera. What is your use case? What is the camera being used & also which SDK is being used?

    - Keerthy

  • 0 in reply to Keerthy J
    Prodigy 20 points

    1. what's your use case?

         surround view with 4 2M camera

    2. what's the camera

         4 2M cameras

    3. which sdk

         rtos+linux. version is 8.1

  • 0 in reply to wu peng
    TI__Guru**** 167430 points
    wu peng said:

    what's the camera

         4 2M cameras

    I meant IMX390 or what is the type of camera.

    It should be possible to get 6 camera in 6 seconds.


    wu peng said:

    cpus in Main domain enter into standby mode, such as WFI.

               in this case, How much power consumption?

          2. cpus in Main domain enter into low power mode. Power to main domain is turned OFF.

               in this case, does the sdk8.1 support now? Is there any roadmap for the feature?

    What are these requirements? Do you need them as well?

    I did not understand how it is related to camera in 6S?

    - Keerthy

  • 0 in reply to Keerthy J
    Prodigy 20 points
    Keerthy J said:

    what's the camera

         4 2M cameras

    I meant IMX390 or what is the type of camera.

    It should be possible to get 6 camera in 6 seconds.

    1.  our camera is similar as the imx390.

          I suppose Image stitching in surrand view app needs the support of GPU, then it needs linux bootup.

          so the critical path is the linux bootup process on A72. 

          could it ready in 6 second?

    Keerthy J said:
    wu peng said:

    cpus in Main domain enter into standby mode, such as WFI.

               in this case, How much power consumption?

          2. cpus in Main domain enter into low power mode. Power to main domain is turned OFF.

               in this case, does the sdk8.1 support now? Is there any roadmap for the feature?

    What are these requirements? Do you need them as well?

    I did not understand how it is related to camera in 6S?

    it's a plan B if cold boot can't meet our requirement.  we could put system into suspend/standby mode to save power.

    The resume will be very fast, but the challenge is the power and  if the feature is ready.

    so I want to know, the power consumption  for standby mode and if suspend/resume feature is ready.

  • 0 in reply to wu peng
    TI__Guru**** 167430 points
    wu peng said:

    I suppose Image stitching in surrand view app needs the support of GPU, then it needs linux bootup.

          so the critical path is the linux bootup process on A72. 

          could it ready in 6 second?

    Yes. We will need SBL to boot from OSPI &  boot Linux directly bypassing U-Boot/SPL You should use the tiny file system to get
    to Linux quickly. An application will be published in a few weeks on this that will contain all the steps.

    - Keerthy

  • 0 in reply to Keerthy J
    Prodigy 20 points

    please let me know  ASAP if the applicaiton is released

  • +1 in reply to wu peng
    TI__Guru**** 167430 points

    Hi,

    Sure. https://www.ti.com/sitesearch/docs/universalsearch.tsp?langPref=en-US&searchTerm=j721e&nr=10#q=j721e&numberOfResults=25&f:technicalDocuments=[Application%20note]

    The above application notes link will get updated as soon as it is ready.

    Closing this thread. Click on verify answer if no other questions.

    - Keerthy