ath9k_hw: fix MAC clock rate for AR9287 v1.3+

This chip uses the async FIFO feature and runs the MAC at 117 MHz

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

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index f69c62e36ed..d4084d89c6f 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -87,7 +87,10 @@ static void ath9k_hw_set_clockrate(struct ath_hw *ah)
         struct ath_common *common = ath9k_hw_common(ah);
         unsigned int clockrate;
 
-        if (!ah->curchan) /* should really check for CCK instead */
+        /* AR9287 v1.3+ uses async FIFO and runs the MAC at 117 MHz */
+        if (AR_SREV_9287(ah) && AR_SREV_9287_13_OR_LATER(ah))
+                clockrate = 117;
+        else if (!ah->curchan) /* should really check for CCK instead */
                 clockrate = ATH9K_CLOCK_RATE_CCK;
         else if (conf->channel->band == IEEE80211_BAND_2GHZ)
                 clockrate = ATH9K_CLOCK_RATE_2GHZ_OFDM;