I've got it working using SDL2 Gamepad Tool <
https://generalarcade.com/gamepadtool/>.
SDL2 Gamepad Tool is very simple tool, no need for install, it is standalone utility app which only helps creating gamepad mapping.
Steps
- Quit FF14
- Connect PS5 controller
- Open SDL2 Gamepad Tool
- Confirm the controller is working
- Click "Set Mapping As Environment Variable" button
- Start FF14
Now it should work, and also button calibration in system config works as well.
FF14 is using SDL2 for gamepad mappings, and we can adjust the mapping by setting the environment variable. I assume we must wait for FF14 to officially update SDL2 lib or add mappings for PS5 controller. They've done this for PS4 controller, so I think someday, it would happen.
By the way, I couldn't find a way to use touch pad button on PS5 controller. Share button and Start button works, but seems like SDL2 Gamepad Tool is not capable of generating the pad button mapping. At the moment, you can use Share button instead of the pad button.
Hope this information helps.