thanks for usb link (i have not look into the wiki, sorry)
autoconfig retroarch is not supported?
cat /opt/retropie/configs/all/retroarch.cfg | egrep “autodetect|joypad_autoconfig_dir”
input_autodetect_enable = true
# corresponding to that joypad is present in joypad_autoconfig_dir.
# Requires input_autodetect_enable to be enabled.
joypad_autoconfig_dir = /opt/retropie/configs/all/retroarch-joypads/
I think whats not support is the preconfigured joypad by retropie (from 2.6)
what I have done is (it worked for me):
cd /opt/retropie/configs/all/retroarch-joypads/
sudo /opt/retropie/emulators/retroarch/bin/retroarch-joyconfig -a joypad.cfg -j0 -t 4
CFG_NAME=$(cat joypad.cfg | grep “input_device” | cut -f 2 -d \” | tr -d ” “)
mv joypad.cfg $CFG_NAME.cfg