[PATCH V4] drm: Add LTTPR defines for DP 1.4a

Ville Syrjälä ville.syrjala at linux.intel.com
Fri Sep 6 11:04:23 UTC 2019


On Thu, Sep 05, 2019 at 07:51:59PM +0000, Siqueira, Rodrigo wrote:
> Hi Ville,
> 
> First of all, thank you very much for the review.
> 
> I added some comments below.
> 
> On 09/05, Wentland, Harry wrote:
> > On 2019-09-05 1:29 p.m., Ville Syrjälä wrote:
> > > On Wed, Sep 04, 2019 at 07:02:18PM +0000, Siqueira, Rodrigo wrote:
> > >> DP 1.4a specification defines Link Training Tunable PHY Repeater (LTTPR)
> > > 
> > > A bunch of this stuff was already in DP 1.3 so the statement here
> > > (and in the comment) is a bit misleading.
> > > 
> > > "LTTPR" is not a name that appears anywhere in the spec AFAICS, so
> > > calling it that is a bit confusing.
> > > 
> 
> We are using "VESA DisplayPort (DP) Standard 1.4a" as a reference. We
> double-checked the specification, and we found many occurrences of
> LTTPR.

Ah, yes I can see it in 1.4a. Earlier versions didn't use that acronym.
I withdraw my objection to this then.

-- 
Ville Syrjälä
Intel


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