Hi Guys,
after a long research I found the solution.
I was using the RoberCNelson dtb-rebuilder as model to my dts. After several tries, I compare the kernel's am5729-beagleboneai.dts with the dts from robert repository, and there was differences, after using the kernel's file instead Robert, I have wifi :) - on the kernel's file I had to comment an OCP part, but for now I didn't discovery any issue.