I was given a slim PS3 CECH-2001A 120GB. It did not have a controller. I bought a used Playstation brand PS4 controller for $5, and plugged it into the USB and it worked moving through menus. The BluRay on Ps3 would not work so, yesterday i used BGtoolset to jailbreak the PS3, install Rebug CFW 4.87 (or latest). I used the PS4 controller plugged into the USB port the entire process. I didn't have any games, so I got a back-up of Gran Turismo 6 and created an ISO, transferred to my NTFS...
PS4 Controller not working on PS3, Rebug CFW, using Multiman
PS4 Controller not working on PS3, Rebug CFW, using Multiman