R92C_RF_CHNLBW
sc->rf_chnlbw[i] = urtwn_rf_read(sc, i, R92C_RF_CHNLBW);
urtwn_rf_write(sc, i, R92C_RF_CHNLBW,
urtwn_rf_write(sc, 0, R92C_RF_CHNLBW,
urtwn_rf_write(sc, 0, R92C_RF_CHNLBW,
urtwn_rf_write(sc, 0, R92C_RF_CHNLBW,
urtwn_rf_read(sc, 0, R92C_RF_CHNLBW) | R92C_RF_CHNLBW_LCSTART);