Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32H7x7_CM4/ADC1_2/CCR#0x0
ADC common control register
ADC clock mode
ADC prescaler
VREFINT enable
Temperature sensor enable
VBAT enable
https://github.com/cmsis-svd/cmsis-svd-data