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The rswitch has three independent ports which each can act as a separate interface with its own MAC address. Describe DT aliases ethernet0, ethernet1, ethernet2 for each rswitch port in DT. This allows U-Boot to insert MAC addresses from its environment variables ethaddr/eth1addr/eth2addr into each rswitch port nodes, so Linux can read and use one unique MAC address for each rswitch port. Note that it is unlikely this would break existing rswitch driver operation in the Linux kernel, because as of right now, the rswitch driver already calls of_get_ethdev_address() for each port to read out the MAC address of each rswitch port DT node. If that is missing, it falls back to MAC address settings read from the hardware itself. If that also fails, it uses a random MAC address. Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/20250118111344.361617-4-marek.vasut+renesas@mailbox.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.