RT5390_RESCAL
run_rt3070_rf_write(sc, 2, RT5390_RESCAL);
run_rt3070_rf_write(sc, 2, rf | RT5390_RESCAL);
run_rt3070_rf_write(sc, 2, rf & ~RT5390_RESCAL);
run_rt3070_rf_write(sc, 2, RT5390_RESCAL);