ath5k: apply the synth voltage tweak only on AR5112 rev 2

Might fix some stability issues on newer chips

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index 3f19e312203627fb13ac1d1b10aaeff4b70876d6..acf73a04211874237425d93cd699344bbc070df3 100644 (file)
--- 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 ath5k_hw *ah,
                        }
 
                        /* 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) {