From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B3FCC10F14 for ; Thu, 3 Oct 2019 08:53:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 595D12086A for ; Thu, 3 Oct 2019 08:53:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728918AbfJCIxG (ORCPT ); Thu, 3 Oct 2019 04:53:06 -0400 Received: from mga03.intel.com ([134.134.136.65]:40501 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727357AbfJCIxG (ORCPT ); Thu, 3 Oct 2019 04:53:06 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Oct 2019 01:53:05 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,251,1566889200"; d="scan'208";a="205570080" Received: from lahna.fi.intel.com (HELO lahna) ([10.237.72.157]) by fmsmga001.fm.intel.com with SMTP; 03 Oct 2019 01:53:01 -0700 Received: by lahna (sSMTP sendmail emulation); Thu, 03 Oct 2019 11:53:00 +0300 Date: Thu, 3 Oct 2019 11:53:00 +0300 From: Mika Westerberg To: Oliver Neukum Cc: Anthony Wong , Mario.Limonciello@dell.com, Andreas Noever , Yehezkel Bernat , Michael Jamet , Rajmohan Mani , Greg Kroah-Hartman , Nicholas Johnson , Alan Stern , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Lukas Wunner Subject: Re: [RFC PATCH 06/22] thunderbolt: Add support for lane bonding Message-ID: <20191003085300.GQ2819@lahna.fi.intel.com> References: <20191001113830.13028-1-mika.westerberg@linux.intel.com> <20191001113830.13028-7-mika.westerberg@linux.intel.com> <20191001123808.GA2954373@kroah.com> <20191001125320.GN2714@lahna.fi.intel.com> <1570026066.2472.15.camel@suse.com> <20191002143020.GG2819@lahna.fi.intel.com> <1570091132.18913.3.camel@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1570091132.18913.3.camel@suse.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 03, 2019 at 10:25:32AM +0200, Oliver Neukum wrote: > Am Mittwoch, den 02.10.2019, 17:30 +0300 schrieb Mika Westerberg: > > On Wed, Oct 02, 2019 at 04:21:06PM +0200, Oliver Neukum wrote: > > > Am Dienstag, den 01.10.2019, 15:53 +0300 schrieb Mika Westerberg: > > > > > > > > > > Are we only going to be allowed to "bond" two links together? Or will > > > > > we be doing more than 2 in the future? If more, then we might want to > > > > > think of a different way to specify these... > > > > > > > > AFAICT only two lanes are available in USB4. This goes over USB type-C > > > > using the two lanes there. > > > > > > > > Of course I don't know if in future there will be USB4 1.1 or something > > > > that adds more lanes so if you think there is a better way to specify > > > > these, I'm happy to implement that instead :) > > > > > > If this ever can become asymmetric this interface is going to turn > > > around and bite. > > > > Don't think it can be asymmetric but I'm open to all ideas how to make > > it more flexible :-) > > Split the the attributes into link_speed_rx and link_speed_tx. For > link_width likewise. We had the same issue with USB. OK, thanks for the suggestion.