With this exact same board revision (v1.42 2022.08.29), my 3 PD adapters failed to power the rock 5B, negociation fails with infinite loop (Allnet 65W, Asus 65W and no name 65W), all having to move to 9V or higher for more than 15W and it is probably part of the explanation. With the Allnet PD654A charger bought fro the rock4B+, I tried both USB-A and C, but 5V is limited to 3A and this is here too low.
I did not think about it at first, but while ready these posts, I realized I had two unused smartphone chargers and the one from OnePlus Nord 2 is a simple 5V 2-6 A adapter… I crossed the fingers and tried… YEESSS!
If You have spare 5V smartphone adapter capable of 5 or 6A, not a PD compliant one, so with only 5V option, You may give it a try as it worked for me. FYI, I booted from a SanDisk Ultra 32 GB SD card.
Important: once upgraded (sudo apt-get update), most PDs are supported and boot correctly, although not all chargers while it is ok with Rock pi 4B+