OpenSTLinux 6.1 (Scarthgap) Optee delay during boot.

VarunKumar · ‎2025-07-30

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 · ‎2025-08-08

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.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.