linux-kernel - [PATCH] wifi: rt2x00: correct wrong BBP register in RxDCOC calibration

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Date:   Thu,  9 Nov 2023 12:38:51 +0800
From:   Shiji Yang <yangshiji66@...look.com>
To:     linux-wireless@...r.kernel.org
Cc:     Stanislaw Gruszka <stf_xl@...pl>, Kalle Valo <kvalo@...nel.org>,
        linux-kernel@...r.kernel.org, Shiji Yang <yangshiji66@...look.com>
Subject: [PATCH] wifi: rt2x00: correct wrong BBP register in RxDCOC calibration

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@...look.com>
---

Hi!

I found another small fix. Ref:
https://github.com/hanwckf/rt-n56u/blob/23387b278a7cf728748af606760758f5d59d1451/trunk/proprietary/rt_wifi/rtsoc/2.7.X.X/rt2860v2/common/cmm_rf_cal.c#L2464-L2470

This link may not be a permanent link, so it is not included in the
commit message.

Regards,
Shiji Yang


 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 7b13c176d..3a52a04d3 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -8710,7 +8710,7 @@ 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);
-- 
2.39.2