[PATCH AUTOSEL 6.6 007/104] wifi: rt2x00: correct wrong BBP register in RxDCOC calibration

From: Sasha Levin
Date: Tue Jan 16 2024 - 15:29:05 EST


From: Shiji Yang <yangshiji66@xxxxxxxxxxx>

[ Upstream commit 50da74e1e8b682853d1e07fc8bbe3a0774ae5e09 ]

Refer to Mediatek vendor driver RxDCOC_Calibration() function, when
performing gainfreeze calibration, we should write register 140
instead of 141. This fix can reduce the total calibration time from
6 seconds to 1 second.

Signed-off-by: Shiji Yang <yangshiji66@xxxxxxxxxxx>
Acked-by: Stanislaw Gruszka <stf_xl@xxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/TYAP286MB0315B13B89DF57B6B27BB854BCAFA@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index e65cc00fa17c..c13ae87f94f4 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -8695,7 +8695,7 @@ static void rt2800_rxdcoc_calibration(struct rt2x00_dev *rt2x00dev)
rt2800_rfcsr_write_bank(rt2x00dev, 5, 4, saverfb5r4);
rt2800_rfcsr_write_bank(rt2x00dev, 7, 4, saverfb7r4);

- rt2800_bbp_write(rt2x00dev, 158, 141);
+ rt2800_bbp_write(rt2x00dev, 158, 140);
bbpreg = rt2800_bbp_read(rt2x00dev, 159);
bbpreg = bbpreg & (~0x40);
rt2800_bbp_write(rt2x00dev, 159, bbpreg);
--
2.43.0