Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32H7B3x/OCTOSPI2/SR#0x0
status register
Clear transfer error flag
Clear transfer complete flag
FIFO threshold flag
Clear status match flag
Clear timeout flag
Busy
FIFO level
https://github.com/cmsis-svd/cmsis-svd-data