On Fri, 16 Jun 2023 16:55:17 -0700, Douglas Anderson wrote:
> In order to read the EDID from an eDP panel, you not only need to
> power on the bridge chip itself but also the panel. In the ps8640
> driver, this was made to work by having the bridge chip manually power
> the panel on by calling pre_enable() on everything connectorward on
> the bridge chain. This worked OK, but...
>
> ...when trying to do the same thing on ti-sn65dsi86, feedback was that
> this wasn't a great idea. As a result, we designed the "DP AUX"
> bus. With the design we ended up with the panel driver itself was in
> charge of reading the EDID. The panel driver could power itself on and
> the bridge chip was able to power itself on because it implemented the
> DP AUX bus.
>
> [...]
Applied, thanks!
[1/1] drm/bridge: ps8640: Drop the ability of ps8640 to fetch the EDID
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=26195af57798
Rob
