hello aravind.m90,
so you’ll need to edit the dts file to have customization,
for example, you may disassembler the dtb file into dts file,
$ dtc -I dtb -O dts -o temp.dts tegra.dtb
after that, you may convert it into a new dtb file for updating the board.
$ dtc -I dts -O dtb -o output.dtb temp.dts