TDA4VM: TDA4 Wake-Up Time Optimization – 6s Requirement and Partial System Initialization Feasibility

Hi Keerthy,

Thank you for the prompt response. Since 6 seconds is possible, could you take a look at our setup and see where it can be optimized as well?

We want to complete camera image streaming and send it out through the Ethernet port within 6 seconds. 

Currently our A-core (Cortex-A72) boot time is around 13 seconds. The existing process is that after the A-core boots up, it loads the camera application, then starts pulling the video stream and pushing it out.

In that case, what optimizations would we need to make to speed up the startup time? Or would we need to change the boot sequence altogether?

The customer wants to complete camera image streaming and send it out through the Ethernet port within 6 seconds. Let’s check with the official vendor to see if there is a feasible solution.

If the official response says it is possible, then we should further ask: currently our A-core boot time is around 13 seconds. The existing process is that after the A-core boots up, it loads the camera application, then starts pulling the video stream and pushing it out.

In that case, what optimizations would we need to make to speed up the startup time? Or would we need to change the boot sequence altogether?

Kenneth,

Please go through the document shared.

https://www.ti.com/lit/an/sprade5/sprade5.pdf?ts=1771616276817

The Main domain R5F in parallel initialises the camera while A72 boots hlos.

Let us know which hlos is being planned to run on A72. Also which core will be controlling cpsw for ethernet.

Best Regards,

Keerthy 

Hi Keerthy,

Thank you for your response.

On another topic, could you also clarify what the power consumption (current) would be when the controller is shut down and when the controller is in retention mode? 

Hi Keerthy,

I was looking through the document attached and when I clicked on 8_6_srv_Imaging.patch it gave me "You do not have permission to view this directory or page." Could you please provide the files in this document for download?

Not just  8_6_srv_Imaging.patch, but all blue linked files with .patch, .mk, .bin, or .sh I do not have access to them.

Hi,

 [FAQ] TDA4VM-Q1: Patches and scripts for the SRV optimization App note 

Please refer the above E2E for patches.

Kenneth Liu said:

On another topic, could you also clarify what the power consumption (current) would be when the controller is shut down and when the controller is in retention mode? 

There is no support for low power mode in the SDK. The above optimization mechanism is for cold boot.

- Keerthy

Hi Keerthy,

When I click the FAQ link and try to open the patches I still get the error "You do not have permission to view this directory or page." I am clicking the blue links and it leads me to the page that says "You do not have permission to view this directory or page."

Hi Keerthy,

As mentioned below, the FAQ link and the links provided on there do not allow me to access the files. Is there anyway I can receive the files through email or have the updated versions posted here?

That's indeed strange. They are public. Let me check and back. 

Best Regards,

Keerthy 

Thank you for looking into this. Would it be possible to email the files to me? We are in urgent need with a close deadline arriving, which could make or break a huge project with over a thousand TI TDA4 chips involved. These files are critical for our development and validation work, and any support you can provide would be extremely helpful. 

Thank you,
Kenneth Liu