How to build the DTB files???

Thanks ALL:

1.How to build the DTB files?Is it to use the DTC tool?

2.When I have modified the DTSI file,where can i find the DTS file.

hello yangxiao6,

please download the [NVIDIA Tegra Linux Driver Package] and check the [Release 28.2 Development Guide].
please refer to [Kernel Customization] chapter to build your kernel and device tree.
moreover, here’s also a wiki page for your reference. https://elinux.org/Jetson/TX2_DTB
thanks