Posted on January 05, 2016 at 00:46Which other than Rocktech display can I use without changing the SW?
Ok I don't think that approach is going to work, you need to be able to have some flexibility, because at some point you're going to be forced to embrace change. So try to make a clean abstraction of display specifics so you can adapt.
Why do I say this? Well you can often find cheap displays from no-name vendors, but the problem here is that once they run out of supplies, or interest, they will move to something else. If you want long term availability, where you can still buy the displays after you've invested a lot of time in design work, you need to find a vendor who has a history of doing that. You should be able to provide the vendor with the specs you're looking for and have them suggest something that matches, or closely matches your requirements. As the F746 provides the frame buffer, and timing, you do have some flexibility to keep the same resolution/format, and use different displays.
I guess you have to decide if it is easier to change the SW or the PCB.
