Question about the type of partitioning created on a PCA to be eligible for trusted partitioning

My understanding is, trusted partitioning is included in the PCA.

I also read about soft(no pinning) and hard partitioning(vcpu pinned to the physical cpu) in the partitioning document.

Can someone please clarify this?

Is any type of partition(soft or hard) created on the PCA is considered as a trusted partition?

OR

Only hard partitioning on the PCA is eligible to be considered as trusted partition?

Thanks in advance.