R88E_TX_PAGE_BOUNDARY
urtwn_write_1(sc, R92C_TXPKTBUF_BCNQ_BDNY, R88E_TX_PAGE_BOUNDARY);
urtwn_write_1(sc, R92C_TXPKTBUF_MGQ_BDNY, R88E_TX_PAGE_BOUNDARY);
urtwn_write_1(sc, R92C_TXPKTBUF_WMAC_LBK_BF_HD, R88E_TX_PAGE_BOUNDARY);
urtwn_write_1(sc, R92C_TRXFF_BNDY, R88E_TX_PAGE_BOUNDARY);
urtwn_write_1(sc, R92C_TDECTRL + 1, R88E_TX_PAGE_BOUNDARY);