Most of the Zynq UltraScale+ MPSoC / RFSoC (ZynqMP) specific code for OP-TEE is currently going upstream to become part of the free open-source edition.
However, there are functions of ZynqMP which require special handling, like the one-time-programmable eFuses, or support for custom secure PL functions, for example. Such device and/or application specific security functions of ZynqMP will be covered only by the PRO edition. Please refer to the comparison table above.