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-rw-r--r--package/mac80211/patches/550-ath9k_rifs_disable.patch31
1 files changed, 31 insertions, 0 deletions
diff --git a/package/mac80211/patches/550-ath9k_rifs_disable.patch b/package/mac80211/patches/550-ath9k_rifs_disable.patch
new file mode 100644
index 0000000000..57441b6437
--- /dev/null
+++ b/package/mac80211/patches/550-ath9k_rifs_disable.patch
@@ -0,0 +1,31 @@
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1326,6 +1326,16 @@ static void ath9k_hw_override_ini(struct
+ * Necessary to avoid issues on AR5416 2.0
+ */
+ REG_WRITE(ah, 0x9800 + (651 << 2), 0x11);
++
++ /*
++ * Disable RIFS search on some chips to avoid baseband
++ * hang issues.
++ */
++ if (AR_SREV_9100(ah) || AR_SREV_9160(ah)) {
++ val = REG_READ(ah, AR_PHY_HEAVY_CLIP_FACTOR_RIFS);
++ val &= ~AR_PHY_RIFS_INIT_DELAY;
++ REG_WRITE(ah, AR_PHY_HEAVY_CLIP_FACTOR_RIFS, val);
++ }
+ }
+
+ static u32 ath9k_hw_def_ini_fixup(struct ath_hw *ah,
+--- a/drivers/net/wireless/ath/ath9k/phy.h
++++ b/drivers/net/wireless/ath/ath9k/phy.h
+@@ -384,6 +384,9 @@ bool ath9k_hw_set_rf_regs(struct ath_hw
+
+ #define AR_PHY_HEAVY_CLIP_ENABLE 0x99E0
+
++#define AR_PHY_HEAVY_CLIP_FACTOR_RIFS 0x99EC
++#define AR_PHY_RIFS_INIT_DELAY 0x03ff0000
++
+ #define AR_PHY_M_SLEEP 0x99f0
+ #define AR_PHY_REFCLKDLY 0x99f4
+ #define AR_PHY_REFCLKPD 0x99f8