Dear Nija,
My first recommendation would be to please make sure that your design complies with the recommendations of the i.MX 8M Mini Hardware Developer’s Guide. You should be able to contact your DFAE for more assistance in this process.
i.MX 8M Mini Hardware Developer’s Guide
Also, we can help you with a general review of your schematics. This can be accomplished by submitting a ticket into our system as the following guide explains:
How to submit a new question for NXP Support
Best regards,
Ruben