The lspci command actually has two more levels of verbosity you can access by typing -vv or -vvv. You'll end up with a ton of text to parse, though. Unless you're a developer, you probably won't gain ...
When I'm using Linux, I know that all the information I need is only a few commands away. If you want to know it, Linux can give it to you -- from security, network, disk space, users, and everything ...