Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/MB9AFB4xM/CRG/APBC1_PSR#0x0
APB1 Prescaler Register
APB1 bus clock frequency division ratio setting bit
APB1 bus reset control bit
APB1 clock enable bit
https://github.com/cmsis-svd/cmsis-svd-data