R92C_EDCA_BK_PARAM
rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a444);
{ R92C_EDCA_BE_PARAM, R92C_EDCA_BK_PARAM,
rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a44f);
rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a44f);