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 3f19e31..acf73a0 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -970,17 +970,20 @@
}
/* 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) {