From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH 0/5] Initial DisplayPort OUI probing Date: Mon, 21 May 2012 20:47:52 +0200 Message-ID: <20120521184752.GE4970@phenom.ffwll.local> References: <1337025949-2355-1-git-send-email-ajax@redhat.com> <1337622107.4334.16.camel@atropine> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wg0-f43.google.com (mail-wg0-f43.google.com [74.125.82.43]) by gabe.freedesktop.org (Postfix) with ESMTP id 7C51F9E76A for ; Mon, 21 May 2012 11:46:33 -0700 (PDT) Received: by wgbdr1 with SMTP id dr1so4189695wgb.12 for ; Mon, 21 May 2012 11:46:32 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1337622107.4334.16.camel@atropine> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Adam Jackson Cc: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On Mon, May 21, 2012 at 01:41:47PM -0400, Adam Jackson wrote: > On Mon, 2012-05-14 at 16:05 -0400, Adam Jackson wrote: > > DisplayPort has an escape hatch by which devices can identify each other. > > I'm not super thrilled that it does, since that's just a clever way of > > getting the spec to explicitly bless interoperability bugs. But it may > > be useful information when debugging link training problems, and there's > > a cute trick you can do on iMacs that I think will require knowing this > > information, so we may as well fill it in. > > > > Tested on a Lenovo T500 against a DP->VGA adaptor (which turns out to be > > an ST Microelectronics chip, who knew) and an HP LP2480zx (which does > > not advertise OUI support, but also harmlessly returns 0s for the OUI > > registers if you read them anyway). > > Bump. Any takers? I have no clue about this (still trying to get hold of the dp spec), but I fear we need this. So Acked-by: Daniel Vetter -- Daniel Vetter Mail: daniel@ffwll.ch Mobile: +41 (0)79 365 57 48