--- /dev/null
+--- a/drivers/net/wireless/ath/ath5k/phy.c
++++ b/drivers/net/wireless/ath/ath5k/phy.c
+@@ -970,17 +970,20 @@ static int ath5k_hw_rfregs_init(struct a
+ }
+
+ /* Lower synth voltage on Rev 2 */
+- ath5k_hw_rfb_op(ah, rf_regs, 2,
+- AR5K_RF_HIGH_VC_CP, true);
++ if (ah->ah_radio == AR5K_RF5112 &&
++ (ah->ah_radio_5ghz_revision & AR5K_SREV_REV) > 0) {
++ ath5k_hw_rfb_op(ah, rf_regs, 2,
++ AR5K_RF_HIGH_VC_CP, true);
+
+- ath5k_hw_rfb_op(ah, rf_regs, 2,
+- AR5K_RF_MID_VC_CP, true);
++ ath5k_hw_rfb_op(ah, rf_regs, 2,
++ AR5K_RF_MID_VC_CP, true);
+
+- ath5k_hw_rfb_op(ah, rf_regs, 2,
+- AR5K_RF_LOW_VC_CP, true);
++ ath5k_hw_rfb_op(ah, rf_regs, 2,
++ AR5K_RF_LOW_VC_CP, true);
+
+- ath5k_hw_rfb_op(ah, rf_regs, 2,
+- AR5K_RF_PUSH_UP, true);
++ ath5k_hw_rfb_op(ah, rf_regs, 2,
++ AR5K_RF_PUSH_UP, true);
++ }
+
+ /* Decrease power consumption on 5213+ BaseBand */
+ if (ah->ah_phy_revision >= AR5K_SREV_PHY_5212A) {