Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Infineon/XMC4700/SCU_CLK/WDTCLKCR#0x0
WDTSEL=value1
WDT Clock Control Register
WDT Clock Divider Value
WDT Clock Selection Value
0 (value1): fOFI clock
1 (value2): fSTDBY clock
2 (value3): fPLL clock
https://github.com/cmsis-svd/cmsis-svd-data