PFINT_OICR
rd32(hw, PFINT_OICR); /* read to clear */
oicr = rd32(hw, PFINT_OICR);
wr32(hw, PFINT_OICR, PFINT_OICR_TSYN_TX_M);
wr32(hw, PFINT_OICR, PFINT_OICR_TSYN_TX_M);
wr32(hw, PFINT_OICR, PFINT_OICR_TSYN_TX_M);
wr32(hw, PFINT_OICR, PFINT_OICR_TSYN_TX_M);