RT2661_TX_CNTL_CSR
RT2661_WRITE(sc, RT2661_TX_CNTL_CSR, 1 << 0);
RT2661_WRITE(sc, RT2661_TX_CNTL_CSR, RT2661_KICK_MGT);
RT2661_WRITE(sc, RT2661_TX_CNTL_CSR, 0x1f << 16);