From e08dd936ef1eaa7aedfbc2dfb331fa6586d79540 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 24 Feb 2010 03:43:30 +0000 Subject: [PATCH] ath9k: disable RIFS search on some chips to avoid baseband hangs SVN-Revision: 19829 --- .../patches/550-ath9k_rifs_disable.patch | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 package/mac80211/patches/550-ath9k_rifs_disable.patch 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