QSPI_MR_DLYBCT_MASK
aq->mr &= ~(QSPI_MR_DLYBCT_MASK | QSPI_MR_DLYCS_MASK);
#define QSPI_MR_DLYBCT(n) (((n) << 16) & QSPI_MR_DLYBCT_MASK)