Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series0/EZR32HG/EZR32HG220F64R63/GPIO/PF_PINLOCKN#0x0
Port Unlocked Pins Register
Unlocked Pins
https://github.com/cmsis-svd/cmsis-svd-data