MSTR_INT_STATUS
writel(QSPI_ALL_IRQS, ctrl->base + MSTR_INT_STATUS);
int_status = readl(ctrl->base + MSTR_INT_STATUS);
writel(int_status, ctrl->base + MSTR_INT_STATUS);
int_status = readl(ctrl->base + MSTR_INT_STATUS);
writel(int_status, ctrl->base + MSTR_INT_STATUS);