TDA4VM: How to improve A72 startup speed

xiaogang liu

Part Number: TDA4VM
Other Parts Discussed in Thread: DRA821, DRA829,

Hi Brijesh Jadav:

I work on sdk 7.03, startup form SD card. The A72 startpup last more than 16s. I use the original linux sdk now. Can you give me some sugestions to improve the startup speed?

over 3 years ago

0 Keerthy J over 3 years ago

TI__Guru**** 163620 points

Hi,

It totally depends on the use case. You can start with OSPI booting till the U-Boot & eMMC hosting the file system. We can use
tiny rootfs instead of the full fledged file system to invoke your use case to come up faster. Minimize the device tree based on
your use case.

Ex: We have quick boot to Linux on DRA821: https://www.ti.com.cn/cn/lit/pdf/sprad09

The above should be applicable for DRA829/TDA4VM as well.

Best Regards,
Keerthy

0 xiaogang liu over 3 years ago in reply to Keerthy J

Intellectual 310 points

Hi Keerthy J

The document provides a way for quick boot. But the linux kernel startup still costs much time.

Is there any way to startup a demo in vision_apps such as app_multi_cam in 6s?

0 Keerthy J over 3 years ago in reply to xiaogang liu

TI__Guru**** 163620 points

Hi,

Are you using a standard TI TDA4VM? Which camera is being used. We do not have a ready document available for getting app_multi_cam under 6 Seconds. You will have to wait for that.

Best Regards,
Keerthy

0 xiaogang liu over 3 years ago in reply to Keerthy J

Intellectual 310 points

Hi Keerthy J:

We are using TDA4VM EVM board, but we have not got the daughter board to link the cameras yet. Currently we have to estimate if we can do time critical display in TDA4 now.

0 Keerthy J over 3 years ago in reply to xiaogang liu

TI__Guru**** 163620 points

Hi,

We do not have the documentation out yet but we can achieve surround view in 2-3 Seconds using the SBL based boot flow(Booting from OSPI) & optimized file system(in eMMC). We can push the first frame to display on ~2 Seconds and then we should add the display time. So

xiaogang liu said:
Is there any way to startup a demo in vision_apps such as app_multi_cam in 6s?

The above is definitely achievable. Let us know when you have the system ready.

Best Regards,
Keerthy

0 xiaogang liu over 3 years ago in reply to Keerthy J

Intellectual 310 points

Hi Keerthy J:

I got the system ready already. And currently we also use SBL booting form OSPI. I think the surrond view in 2-3 seconds you mentioned will helps a lot for us. Could you please give me a patch on how to do it?

0 Keerthy J over 3 years ago in reply to xiaogang liu

TI__Guru**** 163620 points

Hi,

Are you okay with patches on latest SDK? Let me know. I do NOT have patches on 7.3 SDK. So let me know your preference so that I can port the SRV optimization to latest SDK.

- Keerthy