Hi @flobro!
Thank you for reaching out to NXP Support!
You're absolutely right, to prevent resets caused by the watchdog, it’s necessary to configure it properly within the SCFW as well.
You can download the SCFW source code from the link below, based on the BSP version you're using:
Embedded Linux for i.MX Applications Processors
Once downloaded, run the binary file located in the packages folder to extract the source code and documentation for SCFW.
Best regards,
Chavira