compat-wireless-2014-05-22 breaks ath10k in an Archer C7 v2

Kalle Valo kvalo at
Fri Jun 6 02:09:46 PDT 2014


Matti Laakso <malaakso at> writes:

>> Do you see that with all Archer C7 v2 devices or with just one? One
>> possibility is that the calibration data is actually stored outside of
>> QCA9880 board, for example in the host flash or similar. I don't have
>> that AP, can someone else see where the calibration data is stored?
>> I know that ath9k supports this kind of setup, most likely ath10k should
>> as well.
> C7 v1 has the AR9550 calibration data in flash in the last 64 kiB,
> likely C7 v2 as well.

Ok, then the chances are that QCA9880 calibration data is stored in the
flash as well.

> Could someone with v2 and OpenWrt use dd to dump the contents of the
> "art" partition (/dev/mtdblock4 IIRC) and upload it somewhere? I think
> it would be easy to see whether there is just the calibration data for
> AR9550 or if there is also data for QCA9880.

Good idea.

Kalle Valo

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