Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Microchip Technology/ATSAME51J19A/OSCCTRL/DFLLCTRLA#0x0
DFLL48M Control A
DFLL Enable
Run in Standby
On Demand Control
https://github.com/cmsis-svd/cmsis-svd-data