On Tue, Mar 16, 2021 at 02:08:19PM -0700, Douglas Anderson wrote: > The sc7180-trogdor-pompom board might be attached to any number of a > pile of eDP panels. At the moment I'm told that the list might include: > - KD KD116N21-30NV-A010 > - KD KD116N09-30NH-A016 > - Starry 2081116HHD028001-51D > - Sharp LQ116M1JW10 > > It should be noted that while the EDID programmed in the first 3 > panels indicates that they should run with exactly the same timing (to > keep things simple), the 4th panel not only needs different timing but > has a different resolution. > > As is true in general with eDP panels, we can figure out which panel > we have and all the info needed to drive its pixel clock by reading > the EDID. However, we can do this only after we've powered the panel > on. Powering on the panels requires following the timing diagram in > each panel's datasheet which specifies delays between certain > actions. This means that, while we can be quite dynamic about handling > things we can't just totally skip out on describing the panel like we > could do if it was connected to an external-facing DP port. Is this a 'standard' eDP connector? AFAICT, there does seem to be such a thing. I've said in the past I'd be okay with a edp-connector node. If that needs just the "HPD absent delay" property, I think that would be okay. It's just a never ending stream of new properties with each new panel that I don't want to see. Rob
