num_rf_chains problem

Wilco Baan Hofman wilco at
Wed Dec 24 06:39:57 PST 2014

On 23/12/14 08:52, Kalle Valo wrote:
> Wilco Baan Hofman <wilco at> writes:
>> I'm currently setting up openwrt with the latest git ath10k on the
>> Engenius ESR1750.
>> A couple of things are off:
>> - My chip shipped with regdomain code 0x00
>> - OTP calibration is missing?
>> - DFS pattern detector is not working, possibly because of OTP missing
>> - num_rf_chains is reported as 2, which is wrong, it should be 3.
> Most likely the calibration data is somewhere in the host flash (a small
> MTD partion), there are already products which do that. The size of the
> calibration data should be 2116 bytes.
> That would explain why the OTP in the chip itself is empty.
Thanks! I have found a caldata MTD partition, but it contains quite a
bit of data.. is there a signature I can check for the start (or end) of
the calibration data?

-- Wilco

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