Return-path: Received: from nm.newmedia-net.de ([217.113.179.122]:35170 "EHLO webmail.newmedia-net.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752201AbdBKEW5 (ORCPT ); Fri, 10 Feb 2017 23:22:57 -0500 To: Ben Greear , "linux-wireless@vger.kernel.org" , ath10k References: <0082a9e3-83f3-9bc3-af43-b890b91cfd93@candelatech.com> From: Sebastian Gottschall Message-ID: (sfid-20170211_052837_058007_1FAA6EF1) Date: Sat, 11 Feb 2017 05:22:51 +0100 MIME-Version: 1.0 In-Reply-To: <0082a9e3-83f3-9bc3-af43-b890b91cfd93@candelatech.com> Content-Type: text/plain; charset=utf-8; format=flowed Subject: Re: VHT 160Mhz and nss related config. Sender: linux-wireless-owner@vger.kernel.org List-ID: i really can't believe this. if this is true the 160 mhz mode would not make any sense. the maximum tx / rx rate for 4x4 vht80 and 2x2 vht160 is identical. so vht160 would not increase performance in any way Am 10.02.2017 um 23:58 schrieb Ben Greear: > So, it appears that the ath10k QCA9984 4x4 160Mhz chip can do 4x4 MIMO > at VHT80, but > it can do only 2x2 MIMO at VHT160/80+80. > > When configuring a peer, we need to tell the firmware the number of > spatial streams > of the peer at VHT160 and at VHT80 and lower. They are not the same > value. > > I cannot think of any standard way to get this information based on > VHT capabilities > and such. Currently, one could just assume VHT160 NSS is 1/2 of the > VHT80 NSS, > but that is unlikely to be true for all vendors. > > Any ideas? > > Thanks, > Ben > -- Mit freundlichen Grüssen / Regards Sebastian Gottschall / CTO NewMedia-NET GmbH - DD-WRT Firmensitz: Berliner Ring 101, 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