PSA: Recent AMD fTPM fixes introduced regressions in stable and LTS kernels that are breaking TPM, presumably for everyone
https://bugzilla.kernel.org/show_bug.cgi?id=217804#c41
From 6.4.9 onwards, TPM is broken as is LTS 6.1.46. A step downgrade from these versions restores TPM.
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I've had fTPM issues with the bios because I changed CPUs and lost key attestation. Maybe it's my fault, but the reset process isn't documented anywhere clearly and it's not worth digging up my old CPU to reset the Mobo.