[PATCH 0/5] Initial DisplayPort OUI probing
j.glisse at gmail.com
Mon May 21 11:32:34 PDT 2012
On Mon, May 21, 2012 at 1:41 PM, Adam Jackson <ajax at redhat.com> 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?
> - ajax
Radeon & core drm part looks good to me, so Reviewed-by: Jerome Glisse
<jglisse at redhat.com>
But i am not sure how useful this is, i want to blind my eyes and keep
thinking no hw manufacturer will abuse the oui stuff.
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