Hi s_frit,
thank you for you reply.
I've used dtc to decompile, edit and recompile the dtb files. Now the i2s1 seems to be enabled; the problem that I've is that the audio card that I've added in dtb is not available... listing the audio device using "aplay -l" , "arecord -l" "cat /proc/asound/cards" and also /proc/asound/pcm" commands not show the new peripheal.. Any suggestion ?
How I can install dtbo overlays to edit dtb in more robust way?