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Date: Mon, 22 Apr 2019 15:40:32 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Felix Fietkau <nbd@....name>, Sasha Levin <sashal@...nel.org> Subject: [PATCH AUTOSEL 5.0 05/98] mt76: mt76x2: fix external LNA gain settings From: Felix Fietkau <nbd@....name> [ Upstream commit 45a042e3026824a7e910db7a4dd38fef0540b902 ] Devices with external LNA need different values for AGC registers 8 and 9 Signed-off-by: Felix Fietkau <nbd@....name> Signed-off-by: Sasha Levin (Microsoft) <sashal@...nel.org> --- drivers/net/wireless/mediatek/mt76/mt76x2/phy.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/phy.c b/drivers/net/wireless/mediatek/mt76/mt76x2/phy.c index c9634a774705..11167b7af668 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2/phy.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/phy.c @@ -260,10 +260,15 @@ mt76x2_phy_set_gain_val(struct mt76x02_dev *dev) gain_val[0] = dev->cal.agc_gain_cur[0] - dev->cal.agc_gain_adjust; gain_val[1] = dev->cal.agc_gain_cur[1] - dev->cal.agc_gain_adjust; - if (dev->mt76.chandef.width >= NL80211_CHAN_WIDTH_40) + val = 0x1836 << 16; + if (!mt76x2_has_ext_lna(dev) && + dev->mt76.chandef.width >= NL80211_CHAN_WIDTH_40) val = 0x1e42 << 16; - else - val = 0x1836 << 16; + + if (mt76x2_has_ext_lna(dev) && + dev->mt76.chandef.chan->band == NL80211_BAND_2GHZ && + dev->mt76.chandef.width < NL80211_CHAN_WIDTH_40) + val = 0x0f36 << 16; val |= 0xf8; -- 2.19.1
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