Comment 4 for bug 1980018

@stewartshearer

I found two things yesterday that are relevant to what you're saying.

The option works for non-root file systems. I'm not sure why or how but something correctly interprets them and uses the TPM2 chip to unlock on boot.

Fedora, has this working for root file systems, and is running the same version of crypt setup. That doesn't mean they're compiled with the same options, but that the capability should already there in cryptsetup itself