Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32l5/STM32L552/TIM15/OR2#0x0
TIM15 option register 2
BRK BKIN input enable
BRK COMP1 enable
BRK COMP2 enable
BRK dfsdm1_break[0] enable
BRK BKIN input polarity
BRK COMP1 input polarity
BRK COMP2 input polarity
https://github.com/modm-io/cmsis-svd-stm32