AR_PHY_TIMING_CTRL4
reg = AR_READ(sc, AR_PHY_TIMING_CTRL4(i));
AR_WRITE(sc, AR_PHY_TIMING_CTRL4(i), reg);
tmp = otus_phy_get_def(sc, AR_PHY_TIMING_CTRL4);
otus_write(sc, AR_PHY_TIMING_CTRL4, tmp);
tmp = otus_phy_get_def(sc, AR_PHY_TIMING_CTRL4 + offset);
otus_write(sc, AR_PHY_TIMING_CTRL4 + offset, tmp);