Return-path: Received: from webmail.newmedia-net.de ([185.84.6.166]:48208 "EHLO webmail.newmedia-net.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751377AbeAZKPD (ORCPT ); Fri, 26 Jan 2018 05:15:03 -0500 Subject: Re: [PATCH 0/4] ath9k: AR9003 noise floor calibration support To: Kalle Valo , Wojciech Dubowik Cc: linux-wireless@vger.kernel.org, ath9k-devel@qca.qualcomm.com References: <1516692925-6695-1-git-send-email-Wojciech.Dubowik@neratec.com> <87o9ll57ps.fsf@kamboji.qca.qualcomm.com> From: Sebastian Gottschall Message-ID: (sfid-20180126_111507_276459_368E2716) Date: Fri, 26 Jan 2018 10:59:20 +0100 MIME-Version: 1.0 In-Reply-To: <87o9ll57ps.fsf@kamboji.qca.qualcomm.com> Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: i dont know if this is a coincidence. but after testing your patch on a standard ubiquiti nanostation m2 the noise floor looks wrong. it will stay on -112 which is clearly impossible in 2.4 (before it was around -96) Sebastian Am 23.01.2018 um 08:56 schrieb Kalle Valo: > Wojciech Dubowik writes: > >> AR9003 series allows to calibrate noise floor for different frequency >> bins. Once it's done it's possible to get more accurate rssi/signal >> values over whole frequency band at a given temperature. >> The RSSI/signal accuracy reported by calibrated RF cards improves >> from 6 to up to 2dB. >> >> This could be interesting for application which require good signal >> accuracy like roaming or mesh protocols. > This is a very good description of the feature. I think you should copy > it to the patch 3 commit log so that it gets archived to git. (I don't > store cover letters to git.) > -- Mit freundlichen Grüssen / Regards Sebastian Gottschall / CTO NewMedia-NET GmbH - DD-WRT Firmensitz: Stubenwaldallee 21a, 64625 Bensheim Registergericht: Amtsgericht Darmstadt, HRB 25473 Geschäftsführer: Peter Steinhäuser, Christian Scheele http://www.dd-wrt.com email: s.gottschall@dd-wrt.com Tel.: +496251-582650 / Fax: +496251-5826565