{
        if (rt2x00dev->curr_band == IEEE80211_BAND_2GHZ) {
                if (rt2x00_rt(rt2x00dev, RT3070) ||
-                   rt2x00_rt(rt2x00dev, RT3071))
+                   rt2x00_rt(rt2x00dev, RT3071) ||
+                   rt2x00_rt(rt2x00dev, RT3090))
                        return 0x1c + (2 * rt2x00dev->lna_gain);
                else
                        return 0x2e + rt2x00dev->lna_gain;
        rt2x00_set_field32(®, BKOFF_SLOT_CFG_CC_DELAY_TIME, 2);
        rt2800_register_write(rt2x00dev, BKOFF_SLOT_CFG, reg);
 
-       if (rt2x00_rt(rt2x00dev, RT3071)) {
+       if (rt2x00_rt(rt2x00dev, RT3071) ||
+           rt2x00_rt(rt2x00dev, RT3090)) {
                rt2800_register_write(rt2x00dev, TX_SW_CFG0, 0x00000400);
                rt2800_register_write(rt2x00dev, TX_SW_CFG1, 0x00000000);
-               if (rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E)) {
+               if (rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E) ||
+                   rt2x00_rt_rev_lt(rt2x00dev, RT3090, REV_RT3090E)) {
                        rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
                        if (rt2x00_get_field16(eeprom, EEPROM_NIC_DAC_TEST))
                                rt2800_register_write(rt2x00dev, TX_SW_CFG2,
        rt2800_bbp_write(rt2x00dev, 70, 0x0a);
 
        if (rt2x00_rt(rt2x00dev, RT3070) ||
-           rt2x00_rt(rt2x00dev, RT3071)) {
+           rt2x00_rt(rt2x00dev, RT3071) ||
+           rt2x00_rt(rt2x00dev, RT3090)) {
                rt2800_bbp_write(rt2x00dev, 79, 0x13);
                rt2800_bbp_write(rt2x00dev, 80, 0x05);
                rt2800_bbp_write(rt2x00dev, 81, 0x33);
        rt2800_bbp_write(rt2x00dev, 92, 0x00);
 
        if (rt2x00_rt_rev_gte(rt2x00dev, RT3070, REV_RT3070F) ||
-           rt2x00_rt_rev_gte(rt2x00dev, RT3071, REV_RT3071E))
+           rt2x00_rt_rev_gte(rt2x00dev, RT3071, REV_RT3071E) ||
+           rt2x00_rt_rev_gte(rt2x00dev, RT3090, REV_RT3090E))
                rt2800_bbp_write(rt2x00dev, 103, 0xc0);
        else
                rt2800_bbp_write(rt2x00dev, 103, 0x00);
        rt2800_bbp_write(rt2x00dev, 105, 0x05);
        rt2800_bbp_write(rt2x00dev, 106, 0x35);
 
-       if (rt2x00_rt(rt2x00dev, RT3071)) {
+       if (rt2x00_rt(rt2x00dev, RT3071) ||
+           rt2x00_rt(rt2x00dev, RT3090)) {
                rt2800_bbp_read(rt2x00dev, 138, &value);
 
                rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
        u16 eeprom;
 
        if (!rt2x00_rt(rt2x00dev, RT3070) &&
-           !rt2x00_rt(rt2x00dev, RT3071))
+           !rt2x00_rt(rt2x00dev, RT3071) &&
+           !rt2x00_rt(rt2x00dev, RT3090))
                return 0;
 
        /*
        rt2800_rfcsr_write(rt2x00dev, 30, rfcsr);
 
        if (rt2x00_rt(rt2x00dev, RT3070) ||
-           rt2x00_rt(rt2x00dev, RT3071)) {
+           rt2x00_rt(rt2x00dev, RT3071) ||
+           rt2x00_rt(rt2x00dev, RT3090)) {
                rt2800_rfcsr_write(rt2x00dev, 4, 0x40);
                rt2800_rfcsr_write(rt2x00dev, 5, 0x03);
                rt2800_rfcsr_write(rt2x00dev, 6, 0x02);
                rt2x00_set_field32(®, LDO_CFG0_BGSEL, 1);
                rt2x00_set_field32(®, LDO_CFG0_LDO_CORE_VLEVEL, 3);
                rt2800_register_write(rt2x00dev, LDO_CFG0, reg);
-       } else if (rt2x00_rt(rt2x00dev, RT3071)) {
+       } else if (rt2x00_rt(rt2x00dev, RT3071) ||
+                  rt2x00_rt(rt2x00dev, RT3090)) {
                rt2800_rfcsr_read(rt2x00dev, 6, &rfcsr);
                rt2x00_set_field8(&rfcsr, RFCSR6_R2, 1);
                rt2800_rfcsr_write(rt2x00dev, 6, rfcsr);
 
                rt2800_register_read(rt2x00dev, LDO_CFG0, ®);
                rt2x00_set_field32(®, LDO_CFG0_BGSEL, 1);
-               if (rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E)) {
+               if (rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E) ||
+                   rt2x00_rt_rev_lt(rt2x00dev, RT3090, REV_RT3090E)) {
                        rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
                        if (rt2x00_get_field16(eeprom, EEPROM_NIC_DAC_TEST))
                                rt2x00_set_field32(®, LDO_CFG0_LDO_CORE_VLEVEL, 3);
                        rt2800_init_rx_filter(rt2x00dev, false, 0x07, 0x16);
                rt2x00dev->calibration[1] =
                        rt2800_init_rx_filter(rt2x00dev, true, 0x27, 0x19);
-       } else if (rt2x00_rt(rt2x00dev, RT3071)) {
+       } else if (rt2x00_rt(rt2x00dev, RT3071) ||
+                  rt2x00_rt(rt2x00dev, RT3090)) {
                rt2x00dev->calibration[0] =
                        rt2800_init_rx_filter(rt2x00dev, false, 0x07, 0x13);
                rt2x00dev->calibration[1] =
        rt2800_bbp_write(rt2x00dev, 4, bbp);
 
        if (rt2x00_rt_rev_lt(rt2x00dev, RT3070, REV_RT3070F) ||
-           rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E))
+           rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E) ||
+           rt2x00_rt_rev_lt(rt2x00dev, RT3090, REV_RT3090E))
                rt2800_rfcsr_write(rt2x00dev, 27, 0x03);
 
        rt2800_register_read(rt2x00dev, OPT_14_CSR, ®);
 
        rt2800_rfcsr_read(rt2x00dev, 17, &rfcsr);
        rt2x00_set_field8(&rfcsr, RFCSR17_TX_LO1_EN, 0);
-       if (rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E)) {
+       if (rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E) ||
+           rt2x00_rt_rev_lt(rt2x00dev, RT3090, REV_RT3090E)) {
                rt2x00_eeprom_read(rt2x00dev, EEPROM_NIC, &eeprom);
                if (rt2x00_get_field16(eeprom, EEPROM_NIC_EXTERNAL_LNA_BG))
                        rt2x00_set_field8(&rfcsr, RFCSR17_R, 1);
                                                   EEPROM_TXMIXER_GAIN_BG_VAL));
        rt2800_rfcsr_write(rt2x00dev, 17, rfcsr);
 
-       if (rt2x00_rt(rt2x00dev, RT3071)) {
+       if (rt2x00_rt(rt2x00dev, RT3090)) {
+               rt2800_bbp_read(rt2x00dev, 138, &bbp);
+
+               rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &eeprom);
+               if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_RXPATH) == 1)
+                       rt2x00_set_field8(&bbp, BBP138_RX_ADC1, 0);
+               if (rt2x00_get_field16(eeprom, EEPROM_ANTENNA_TXPATH) == 1)
+                       rt2x00_set_field8(&bbp, BBP138_TX_DAC1, 1);
+
+               rt2800_bbp_write(rt2x00dev, 138, bbp);
+       }
+
+       if (rt2x00_rt(rt2x00dev, RT3071) ||
+           rt2x00_rt(rt2x00dev, RT3090)) {
                rt2800_rfcsr_read(rt2x00dev, 1, &rfcsr);
                rt2x00_set_field8(&rfcsr, RFCSR1_RF_BLOCK_EN, 1);
                rt2x00_set_field8(&rfcsr, RFCSR1_RX0_PD, 0);