From: Rajkumar Manoharan Date: Sat, 20 Aug 2011 12:04:19 +0000 (+0530) Subject: ath9k_hw: Disable Walsh spatial spreading for 2 chains X-Git-Tag: upstream/snapshot3+hdmi~8889^2~254^2~235 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8ad38d22dc6f6c244642ca1fbe9255d7d149870a;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git ath9k_hw: Disable Walsh spatial spreading for 2 chains The Walsh bit is disabled for regulatory consideration. FCC limit for walsh enable is lower than that for walsh disable. So disabling walsh bit will not limit tx power/affect tx power even in cases where we are not FCC limited (most client cards). If the tx power is not FCC limited, then enabling/disabling walsh bit will not affect Avg. EVM/overall performance in any visible manner. Cc: Felix Fietkau Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h b/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h index a0aadad..f2c6f23 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h +++ b/drivers/net/wireless/ath/ath9k/ar9003_2p2_initvals.h @@ -636,7 +636,7 @@ static const u32 ar9300_2p2_baseband_postamble[][5] = { {0x00009e44, 0x02321e27, 0x02321e27, 0x02291e27, 0x02291e27}, {0x00009e48, 0x5030201a, 0x5030201a, 0x50302012, 0x50302012}, {0x00009fc8, 0x0003f000, 0x0003f000, 0x0001a000, 0x0001a000}, - {0x0000a204, 0x000037c0, 0x000037c4, 0x000037c4, 0x000037c0}, + {0x0000a204, 0x000036c0, 0x000036c4, 0x000036c4, 0x000036c0}, {0x0000a208, 0x00000104, 0x00000104, 0x00000004, 0x00000004}, {0x0000a22c, 0x01026a2f, 0x01026a2f, 0x01026a2f, 0x01026a2f}, {0x0000a230, 0x0000000a, 0x00000014, 0x00000016, 0x0000000b}, diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c index 88468a0..33edb56 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c @@ -482,7 +482,7 @@ static void ar9003_hw_set_channel_regs(struct ath_hw *ah, (REG_READ(ah, AR_PHY_GEN_CTRL) & AR_PHY_GC_ENABLE_DAC_FIFO); /* Enable 11n HT, 20 MHz */ - phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SINGLE_HT_LTF1 | AR_PHY_GC_WALSH | + phymode = AR_PHY_GC_HT_EN | AR_PHY_GC_SINGLE_HT_LTF1 | AR_PHY_GC_SHORT_GI_40 | enableDacFifo; /* Configure baseband for dynamic 20/40 operation */