Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32H7x5_CM7/HRTIM_Common/DLLCR#0x0
DLL Control Register
DLL Calibration Start
DLL Calibration Enable
DLL Calibration rate
https://github.com/cmsis-svd/cmsis-svd-data