Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Microchip Technology/ATSAMD51G18A/MCLK/APBCMASK#0x0
APBC Mask
TCC2 APB Clock Enable
PDEC APB Clock Enable
AC APB Clock Enable
AES APB Clock Enable
TRNG APB Clock Enable
ICM APB Clock Enable
QSPI APB Clock Enable
CCL APB Clock Enable
https://github.com/cmsis-svd/cmsis-svd-data