Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/XSPI1/XSPI_TCR#0x0
DHQC=B_0x0, SSHIFT=B_0x0
XSPI 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