30 lines
1.2 KiB
Diff
30 lines
1.2 KiB
Diff
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
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Date: Wed, 22 Jul 2015 10:42:43 +0200
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Subject: [PATCH] ath9k: Fix NF CCA limits for AR9287 and AR9227
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The FreeBSD driver [0] uses the same 2G values as for the AR9280 chips.
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Using the same values in ath9k results in much better throughput for me.
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Before this patch I had a huge amount of packet loss (sometimes up to
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40%) and the max transfer speed was somewhere around 5Mbit/s. With this
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patch applied I have zero packet loss and ten times the throughput.
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My device uses a AR9227 which is the PCI variant of the AR9287.
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[0] http://bxr.su/FreeBSD/sys/dev/ath/ath_hal/ar9002/ar9287.h
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Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
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---
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--- a/drivers/net/wireless/ath/ath9k/ar9002_phy.h
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+++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.h
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@@ -610,8 +610,8 @@
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#define AR_PHY_CCA_MIN_GOOD_VAL_9271_2GHZ -127
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#define AR_PHY_CCA_MAX_GOOD_VAL_9271_2GHZ -116
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-#define AR_PHY_CCA_NOM_VAL_9287_2GHZ -120
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+#define AR_PHY_CCA_NOM_VAL_9287_2GHZ -112
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#define AR_PHY_CCA_MIN_GOOD_VAL_9287_2GHZ -127
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-#define AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ -110
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+#define AR_PHY_CCA_MAX_GOOD_VAL_9287_2GHZ -97
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#endif
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