All solved and work as expected after modifying mupen64plus.cfg from:
# Controller configuration mode: 0=Fully Manual, 1=Auto with named SDL Device, 2=Fully automatic
mode = 2
to:
# Controller configuration mode: 0=Fully Manual, 1=Auto with named SDL Device, 2=Fully automatic
mode = 1
I have done my own mapping, at the end:
0_1531725491626_2d77c9b5-705b-4701-adca-ef13e511e992-image.png