Welcome to the forum! What is the reason for this requirement? Is it to have secure boot and a secure compute environment on the phone? In that case Fairphone uses something similar; TrustZone (if I’m not mistaken).
https://www.howtogeek.com/387934/your-smartphone-has-a-special-security-chip.-heres-how-it-works/
However, I’m not really 100% sure if this is functioning well enough. An app I use for work (Entrust) says my FP4 is not compliant with encryption standards. FP hasn’t been able to clarify why this is.
For a definite answer it’s best to contactsupport. Maybe you can poke them too about that FIPS-140 issue