On 01/09/2014 02:10 PM, Sujith Manoharan wrote:
Wojciech Dubowik wrote:
This code will always set run_agc to true. Does it mean you always have
to run agc cal no matter what since default is anyway true or it's just a typo?
That was the aim of the patch.
When it has been decided to do TX IQ calibration, AGC cal has to be
run. IQ cal can be done separately in the driver (pre-AR9485) or it
can be taken care of by the HW when AGC cal is triggered.
Ok
The reason I am asking is that I have ran into problem with rssi reporting
when calibration is ongoing. It looks like beacon received just after IQ
mismatch calibration is reported ~10-15 dB higher than it should. I have
verified power with wireshark and they are ok at antenna port. Next beacons
are reported fine. I have tried to enable disable different antennas but it
doesn't seem to affect the results.
It doesn't happen all the time but since iq calibration is on every time we
are scanning it puts wrong rssi value in scan result entry. I don't have a
proof yet but it might affect probe responses as well.
Which chip ? Is this issue seen with an older snapshot of the driver ?
(There is an IQ cal fix for AR955x which I haven't ported to ath9k yet).
AR9590 running on powerpc with latest openwrt i.e.
compat-wireless-2013-11-05 backported with
your changes for split pci/soc IQ calibration.
I could try to reproduce it on my host with latest wireless testing if
you think
it helps.
Wojtek
Sujith
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
