deltaray that device tree is missing HDMI, so it's not very helpful. Besides, H6 based OrangePis need support for ddc regulator which is not yet added to mainline hdmi driver. Without this, you'll always have a default resolution, which is 1024x768. Wait a week or two until I get one of those boards (hopefully).
Thanks for the update. Overall the device appears to be fast, but OrangePI software support is as always terrible.