From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail2.candelatech.com ([208.74.158.173]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Wk3WE-0006jy-7z for ath10k@lists.infradead.org; Tue, 13 May 2014 03:36:42 +0000 Message-ID: <53719332.9040700@candelatech.com> Date: Mon, 12 May 2014 20:36:18 -0700 From: Ben Greear MIME-Version: 1.0 Subject: Re: RE : [PATCH v2 2/2] ath10k: support get/set antenna configurations. References: <1399565896-29791-1-git-send-email-greearb@candelatech.com> <5370F41A.70202@candelatech.com> In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Avery Pennarun Cc: Vu Hai NGUYEN , Patrick CARNEIRO RODRIGUEZ , "ath10k@lists.infradead.org" On 05/12/2014 05:49 PM, Avery Pennarun wrote: > On Mon, May 12, 2014 at 12:17 PM, Ben Greear wrote: >> My patch was against my own tree which is a mix of 3.14 and an older version of git://github.com/kvalo/ath.git >> >> I do not have time right now to re-do the patch, but next time I get some time I will >> fix the patch to apply to ath.git. If someone else wants to do it first, I will not >> complain :) > > I've tested it and will upload a re-spun version against a more resent > ath-next shortly. > > Using firmware 10.1.467.2-1, I tested it as follows: > - disconnected the second antenna > - iw phy phy1 set antenna {all, 1, 2, 4, 6, 3, 5, 7} > - Measure iperf performance and RSSI from my (2x2) macbook. > > Expected: > - lower RSSI when using fewer antennas > - very poor signal when using only the disconnected antenna > - slower speeds when using fewer antennas > > Actual: > - my AP did not successfully send out any beacons with antenna modes 2, 4, or 6. > - RSSI was roughly 6dB less with 1 than with 5 or 7 > - seemed to degrade to 1 spatial stream as expected in modes 1 and 3 > - 2 spatial streams and good RSSI as expected in modes 5 and 7 > > So there seems to be a problem when the first antenna is not enabled. > Firmware bug perhaps? I seem to recall that you can only use 1, 3, or 7 in ath9k, probably ath10k has same constraints. Thanks, Ben > > Thanks, > > Avery > -- Ben Greear Candela Technologies Inc http://www.candelatech.com _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k