Redump is for disc based systems only os it won't have NDS or GBA games (see no-intro.org).
The original PSP is disc based so redump does have it. The PSP miss list is here http://wiki.redump.org/index.php?title= … n_Portable
The miss list may not be complete or accurate so also check the entries that are already in the database for the system http://redump.org/discs/system/psp/
Keep in mind that redump only accepts perfect dumps from games you physically own, not roms found on the internet. Welcome
Thank you very much user7. There is also a problem that the PSP link is empty