Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Microchip Technology/ATSAME51J19A/OSCCTRL/DFLLMUL#0x0
DFLL48M Multiplier
DFLL Multiply Factor
Fine Maximum Step
Coarse Maximum Step
https://github.com/cmsis-svd/cmsis-svd-data