Going to the DD-WRT site the first problem one encounters is that it's backwards when searching for a compatible device. You have to guess a manufacturer that might make compatible devices.
... and typically in my experience with DD-WRT and openwrt, there's a banner on the DD-WRT home page announcing Buffalo AirStation routers which run DD-WRT natively. Click on the link and you get "Page not found" with no indication that Buffalo do actually make DD-WRT based routers.