Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f4/STM32F446/RCC/AHB2ENR#0x0
AHB2 peripheral clock enable register
Camera interface enable
USB OTG FS clock enable
https://github.com/modm-io/cmsis-svd-stm32