From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: [PATCH] drm/i915: no LVDS on Intel SandyBridge SDVs Date: Tue, 21 Dec 2010 11:36:44 +0000 Message-ID: <0d30dc$khaeue@orsmga001.jf.intel.com> References: <20101220120540.5f990080@jbarnes-desktop> <20101220185314.7feb7b75@jbarnes-desktop> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id EC7EA9E709 for ; Tue, 21 Dec 2010 03:36:47 -0800 (PST) In-Reply-To: <20101220185314.7feb7b75@jbarnes-desktop> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Jesse Barnes , Dave Airlie Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Mon, 20 Dec 2010 18:53:14 -0800, Jesse Barnes wrote: > On Tue, 21 Dec 2010 12:43:38 +1000 > Dave Airlie wrote: > > > On Tue, Dec 21, 2010 at 6:05 AM, Jesse Barnes wrote: > > > Add a DMI match entry for the SDV to indicate it has no LVDS present. > > > > Sounds wrong, generally the SDVs can get an LVDS panel plugged into > > them, so they have an LVDS connector. > > Yeah I think there's actually a header on this board for LVDS so it > would be better to have a way to detect that. I don't know what that > method would be though... I think once upon a time I found a reliable method in the docs: intel_lvds_ddc_probe(). However that only seemed to work over GMBUS... Jesse, can you try disabling bus->force_bit in intel_i2c.c and see if that probe method still works? -Chris -- Chris Wilson, Intel Open Source Technology Centre