(cc-ed device tree maintainers and mailing list)

The second patch in this series[1] is already in tty-next[2].

Sorry for not cc-ing device tree maintainers/mailing list at the beginning.
I can resend this patch if needed.

Thanks.

[1] https://patchwork.kernel.org/patch/10962299/
[2] https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/log/?h=tty-testing