QINT_TQCTL_CAUSE_ENA_M
val = QINT_TQCTL_CAUSE_ENA_M | itr_idx |
val &= ~QINT_TQCTL_CAUSE_ENA_M;
wr32(hw, QINT_TQCTL(pfq), reg | QINT_TQCTL_CAUSE_ENA_M);