Tool to generate PinMux device tree in 3.8.. kernel

Good afternoon
I am developing a tool to generate DTS files for BeagleBone Black ....
Now this is in Portuguese when I have ported to English, since this list ...
The link is http://www.magsoft.com.br/BeagleBoneBlack/PinMux.html
Any suggestions are welcome ...
Thank you
Maycon