What Video card and CPU do you have installed?
Maybe you might want to open a AMD Service Request and ask them why PSP is not showing or disabled from here: https://www.amd.com/en/support/contact-email-form
By any chance, Have you tried to see in Device Manager under "View" - "Show Hidden Devices" and see if PSP is there. If it is then you can try and manually install the driver from the AMD CHIPSET Folder in C:\.
EDIT: Been reading about PSP and it seems like you can enable or disable it in the Motherboard's BIOS/UEFI. Possible PSP is disabled by default in BIOS/UEFI. You may want to check to see if there is a PSP setting in BIOS/UEFI.