Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/RCC/RCC_MISCLPENCR#0x0
RCC miscellaneous Sleep enable register
DBG sleep enable
XSPIPHYCOMP sleep enable
PER sleep enable
https://github.com/modm-io/cmsis-svd-stm32