[PATCH 4/9] mt76: adjust AGC control register 26 based on gain for VHT80

[Felix Fietkau]

Use values based on the vendor driver

Signed-off-by: Felix Fietkau <n...@nbd.name>
---
 drivers/net/wireless/mediatek/mt76/mt76x2_phy.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c 
b/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c
index a510f116d52a..a2c3f0e35f86 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c
@@ -525,10 +525,17 @@ mt76x2_phy_update_channel_gain(struct mt76x2_dev *dev)
 
        dev->cal.low_gain = low_gain;
 
-       if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_80)
+       if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_80) {
                mt76_wr(dev, MT_BBP(RXO, 14), 0x00560211);
-       else
+               val = mt76_rr(dev, MT_BBP(AGC, 26)) & ~0xf;
+               if (low_gain == 2)
+                       val |= 0x3;
+               else
+                       val |= 0x5;
+               mt76_wr(dev, MT_BBP(AGC, 26), val);
+       } else {
                mt76_wr(dev, MT_BBP(RXO, 14), 0x00560423);
+       }
 
        if (low_gain == 2) {
                mt76_wr(dev, MT_BBP(RXO, 18), 0xf000a990);
-- 
2.17.0