From: Daniel Vetter <daniel@ffwll.ch>
To: Adam Jackson <ajax@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 0/5] Initial DisplayPort OUI probing
Date: Mon, 21 May 2012 20:47:52 +0200 [thread overview]
Message-ID: <20120521184752.GE4970@phenom.ffwll.local> (raw)
In-Reply-To: <1337622107.4334.16.camel@atropine>
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@ffwll.ch>
--
Daniel Vetter
Mail: daniel@ffwll.ch
Mobile: +41 (0)79 365 57 48
next prev parent reply other threads:[~2012-05-21 18:46 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-14 20:05 [PATCH 0/5] Initial DisplayPort OUI probing Adam Jackson
2012-05-14 20:05 ` [PATCH 1/5] drm/dp: Add DPCD OUI register defines Adam Jackson
2012-05-14 20:05 ` [PATCH 2/5] drm/dp: Add DPCD defines for register 0x007 Adam Jackson
2012-05-14 20:05 ` [PATCH 3/5] drm/i915/dp: Probe branch/sink OUIs Adam Jackson
2012-05-14 20:05 ` [PATCH 4/5] drm/radeon/dp: " Adam Jackson
2012-05-14 20:05 ` [PATCH 5/5] drm/nouveau/dp: " Adam Jackson
2012-05-21 17:41 ` [PATCH 0/5] Initial DisplayPort OUI probing Adam Jackson
2012-05-21 18:32 ` Jerome Glisse
2012-05-21 18:47 ` Daniel Vetter [this message]
2012-05-21 19:27 ` Alex Deucher
2012-05-21 20:11 ` Adam Jackson
2012-05-21 20:35 ` Alex Deucher
2012-05-21 21:09 ` Adam Jackson
2012-05-21 21:48 ` Alex Deucher
2012-05-22 9:27 ` Dave Airlie
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