Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f7/STM32F745/OTG_FS_GLOBAL/OTG_FS_GPWRDN#0x0
OTG power down register
ADP module enable
ADP interrupt flag
https://github.com/modm-io/cmsis-svd-stm32