Timur Tabi wrote at Wednesday, January 11, 2012 1:33 PM: > Stephen Warren wrote: > > Well, the EDID needs to be read on every hotplug event, so it's certainly > > not a one-time thing. > > What is the hotplug event that triggers an EDID read?
For monitors attached to user-accessible connectors, whenever the user physically plugs in a new monitor, you need to read the EDID since it could be a new monitor. DVI and HDMI have explicit hotplug detect lines to trigger this. I'm not sure how it works for VGA; perhaps you have to manually reprobe. Of course, if this thread is talking about built-in LCD displays where the connectivity is fixed, this is a non-issue, but it's still a relevant general design discussion; hopefully whatever solution that's picked would work for DVI/HDMI even if you're dealing with LCDs right now. -- nvpublic _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
