According to table of hardware, Edimax BR-6475nD is "fully or reasonably" supported by OpenWrt. There is also a patch that brings support for this device (though apparently it has never been imported). And, looking in downloads, it seems there are images missing for RT3662/RT3883 devices, either in AA or snapshots.
So the question: is this device really supported? And if so, has anyone actually succeeded in running OpenWrt on it (or any other RT3662/RT3883 based device)?
PS: In case OpenWrt runs on this device, AFAICT it will also run on very similar BR-6675nD. Edimax firmwares for these two devices come from the same source code, and I'm actually running v1.22 (which is for 6675) on 6475.