Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32h5/STM32H523/OCTOSPI/OCTOSPI_TCR#0x0
SSHIFT=B_0x0, DHQC=B_0x0
OCTOSPI timing configuration register
Number of dummy cycles
Delay hold quarter cycle
0 (B_0x0): No delay hold
1 (B_0x1): 1/4 cycle hold
Sample shift
0 (B_0x0): No shift
1 (B_0x1): 1/2 cycle shift
https://github.com/modm-io/cmsis-svd-stm32