From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from wolverine01.qualcomm.com ([199.106.114.254]:60581 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751043AbaFEKjF (ORCPT ); Thu, 5 Jun 2014 06:39:05 -0400 From: Kalle Valo To: Andy Lutomirski CC: Michal Kazior , Linux Wireless List , "ath10k@lists.infradead.org" Subject: Re: compat-wireless-2014-05-22 breaks ath10k in an Archer C7 v2 In-Reply-To: (Andy Lutomirski's message of "Thu, 29 May 2014 10:52:32 -0700") References: Date: Thu, 5 Jun 2014 13:26:43 +0300 Message-ID: <87r433ps7w.fsf@kamboji.qca.qualcomm.com> (sfid-20140605_123909_585733_50D4E121) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: linux-wireless-owner@vger.kernel.org List-ID: Andy Lutomirski writes: > On Thu, May 29, 2014 at 12:48 AM, Michal Kazior wrote: >> +ath10k@lists.infradead.org >> >> On 28 May 2014 20:35, Andy Lutomirski wrote: >>> It dies with 'otp calibration failed: 2'. >>> >>> Some older version of the driver seemed to work fine. >> >> ath10k did not verify otp result before so it could load successfully >> despite errors. >> >> Someone raised this problem yesterday on IRC. I'm not really sure how >> we should deal with this properly. > > Ideally, someone from Atheros could figure out what the error is. Michal already did. The error means that for some reason the calibaration data was not found from OTP. OTP is the storage area where the calibration data is normally stored within QCA9880. > Barring that, the card seems to work okay without otp (I don't even > know what otp is), so just warning and continuing to load might be > better than bailing. This means that your card is not properly calibrated and it doesn't function in an optimal way (for example range or throughput is less than what it could be). 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. -- Kalle Valo From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from sabertooth02.qualcomm.com ([65.197.215.38]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WsV4x-0007Mc-CP for ath10k@lists.infradead.org; Thu, 05 Jun 2014 10:39:28 +0000 From: Kalle Valo Subject: Re: compat-wireless-2014-05-22 breaks ath10k in an Archer C7 v2 In-Reply-To: (Andy Lutomirski's message of "Thu, 29 May 2014 10:52:32 -0700") References: Date: Thu, 5 Jun 2014 13:26:43 +0300 Message-ID: <87r433ps7w.fsf@kamboji.qca.qualcomm.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Andy Lutomirski Cc: Linux Wireless List , Michal Kazior , "ath10k@lists.infradead.org" Andy Lutomirski writes: > On Thu, May 29, 2014 at 12:48 AM, Michal Kazior wrote: >> +ath10k@lists.infradead.org >> >> On 28 May 2014 20:35, Andy Lutomirski wrote: >>> It dies with 'otp calibration failed: 2'. >>> >>> Some older version of the driver seemed to work fine. >> >> ath10k did not verify otp result before so it could load successfully >> despite errors. >> >> Someone raised this problem yesterday on IRC. I'm not really sure how >> we should deal with this properly. > > Ideally, someone from Atheros could figure out what the error is. Michal already did. The error means that for some reason the calibaration data was not found from OTP. OTP is the storage area where the calibration data is normally stored within QCA9880. > Barring that, the card seems to work okay without otp (I don't even > know what otp is), so just warning and continuing to load might be > better than bailing. This means that your card is not properly calibrated and it doesn't function in an optimal way (for example range or throughput is less than what it could be). 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. -- Kalle Valo _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k