ath9k_hw: set the PHY mode for half/quarter channels on AR9003

Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ar9003_phy.c

@@ -723,6 +723,10 @@ static void ar9003_hw_set_rfmode(struct ath_hw *ah,
 
 	if (IS_CHAN_A_FAST_CLOCK(ah, chan))
 		rfMode |= (AR_PHY_MODE_DYNAMIC | AR_PHY_MODE_DYN_CCK_DISABLE);
+	if (IS_CHAN_QUARTER_RATE(chan))
+		rfMode |= AR_PHY_MODE_QUARTER;
+	if (IS_CHAN_HALF_RATE(chan))
+		rfMode |= AR_PHY_MODE_HALF;
 
 	REG_WRITE(ah, AR_PHY_MODE, rfMode);
 }