OpenSTLinux 6.1 (Scarthgap) Optee delay during boot.

[VarunKumar]

Hi,

I am in the process of migrating my application to OpenSTLinux 6.1 (Scarthgap) and we are targeting a boot time of ≤10 seconds. while working on this, I observed that the OP-TEE layer takes some extra time during  secondary CPU initialization. As OP-TEE is new, I would like have some help in understanding the root cause of this delay and whether any optimization is possible in this phase.

I am using STM32MP157A Hardware. Below reference image is attached.

[Erwan SZYMANSKI]

Hello @VarunKumar,
Indeed, the place you point on seems to take a bit time, I did not check at this particular place in my previous setups, but I will take a look at it. 

Just for information, a dedicated wiki page with some tips is available here: https://wiki.st.com/stm32mpu/wiki/How_to_optimize_the_boot_time

Kind regards,
Erwan.