Hi,

On Tue, Dec 30, 2025 at 9:20 AM Robin Murphy [off-list ref] wrote:

Hi all,

I've been using the HD702E LCD/touchscreen on my NanoPC-T4 for a few
years using my own DT with the "simple-panel" binding, but now we have
upstream overlays I figured it's about time to try doing it properly.
The screen itself doesn't seem to want to work as a generic "edp-panel",
as it appears the EDID isn't readable until after the whole lot is
enabled - I'm guessing this might be to do with the Analogix driver's
force-hpd behaviour - but since we do already have the legacy data, it
doesn't seem unreasonable to keep using it.

Oh, I guess I should have read the cover letter before the patches. Sorry! :(

I'm hoping that with the "hpd-absent-delay-ms" you'll be able to read
the EDID. I'd be surprised if something else is required, but let me
know if that doesn't work.

-Doug