Yes. In tree means their sources are in the Linux kernel git repository, as opposed to out of tree drivers. In tree drivers are maintained by the maintainers, s

Yes. In tree means their sources are in the Linux kernel git repository, as opposed to out of tree drivers. In tree drivers are maintained by the maintainers, so API changes are done together for all in tree drivers. Out of tree drivers don't get this benefit, and are more difficult to build in my experience.