Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/MB9BFD1xT/GPIO/PFR8#0x0
Port function setting register 8
Bit0 of PFR8
Bit1 of PFR8
Bit2 of PFR8
Bit3 of PFR8
https://github.com/cmsis-svd/cmsis-svd-data