From: Keith Packard <keithp@keithp.com>
To: Adam Jackson <ajax@redhat.com>, Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 3/7] drm/i915: Treat PCH eDP like DP in most places
Date: Wed, 02 Nov 2011 10:31:46 -0700 [thread overview]
Message-ID: <yun8vnywhvh.fsf@aiko.keithp.com> (raw)
In-Reply-To: <4EB17A50.6050804@redhat.com>
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On Wed, 02 Nov 2011 13:13:52 -0400, Adam Jackson <ajax@redhat.com> wrote:
> Given the choice of trusting DPCD or the VBT, I'd definitely prefer
> DPCD.
Except that the DPCD is coded into the monitor while the VBT is done by
the platform. And, it's the platform which may neglect to connect some
of the wires. In any case, if we want to look at these values, we should
be doing it before computing the M/N ratio so that we actually set the
hardware up correctly.
Any bets on how long until we find a machine that has right value in the
VBT and the wrong one in DPCD? Or a machine with wrong values in both places?
--
keith.packard@intel.com
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next prev parent reply other threads:[~2011-11-02 17:31 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-02 6:20 [PATCH 0/7] drm/i915: Fix PCH eDP support for SNB Keith Packard
2011-11-02 6:20 ` [PATCH 1/7] drm/i915: Move common PCH_PP_CONTROL setup to ironlake_get_pp_control Keith Packard
2011-11-02 16:02 ` [Intel-gfx] " Jesse Barnes
2011-11-02 16:13 ` Keith Packard
2011-11-02 6:20 ` [PATCH 2/7] drm/i915: Remove link_status field from intel_dp structure Keith Packard
2011-11-02 16:13 ` [Intel-gfx] " Jesse Barnes
2011-11-02 6:20 ` [PATCH 3/7] drm/i915: Treat PCH eDP like DP in most places Keith Packard
2011-11-02 15:29 ` [Intel-gfx] " Adam Jackson
2011-11-02 16:55 ` Keith Packard
2011-11-02 17:35 ` Keith Packard
2011-11-02 16:20 ` Jesse Barnes
2011-11-02 17:10 ` Keith Packard
2011-11-02 17:13 ` Adam Jackson
2011-11-02 17:31 ` Keith Packard [this message]
2011-11-02 19:36 ` Adam Jackson
2011-11-02 20:05 ` Keith Packard
2011-11-02 20:35 ` Adam Jackson
2011-11-02 21:13 ` Keith Packard
2011-11-02 21:16 ` Adam Jackson
2011-11-02 18:54 ` Keith Packard
2011-11-02 19:07 ` Alex Deucher
2011-11-02 6:20 ` [PATCH 4/7] drm/i915: Let panel power sequencing hardware do its job Keith Packard
2011-11-02 7:31 ` Keith Packard
2011-11-02 16:23 ` [Intel-gfx] " Jesse Barnes
2011-11-02 17:14 ` Keith Packard
2011-11-02 17:37 ` Keith Packard
2011-11-03 19:57 ` Jesse Barnes
2011-11-03 22:01 ` Keith Packard
2011-11-02 6:20 ` [PATCH 5/7] drm/i915: Make DP prepare/commit consistent with DP dpms Keith Packard
2011-11-03 20:00 ` [Intel-gfx] " Jesse Barnes
2011-11-03 22:30 ` Keith Packard
2011-11-03 22:41 ` Jesse Barnes
2011-11-03 22:59 ` Keith Packard
2011-11-02 6:20 ` [PATCH 6/7] drm/i915: Try harder during dp pattern 1 link training Keith Packard
2011-11-02 9:12 ` Chris Wilson
2011-11-02 17:20 ` Keith Packard
2011-11-02 17:38 ` Keith Packard
2011-11-03 20:03 ` [Intel-gfx] " Jesse Barnes
2011-11-03 22:32 ` Keith Packard
2011-11-02 6:20 ` [PATCH 7/7] drm/i915: Remove trailing white space Keith Packard
2011-11-03 20:03 ` [Intel-gfx] " Jesse Barnes
2011-11-03 22:36 ` Keith Packard
2011-11-03 22:48 ` Keith Packard
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