[PATCH 0/4] Properly support FriendlyElec HD702E
Doug Anderson
dianders at chromium.org
Mon Jan 5 11:35:26 PST 2026
Hi,
On Tue, Dec 30, 2025 at 9:20 AM Robin Murphy <robin.murphy at arm.com> 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
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