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The Allwinner A523 SoC family has a second Ethernet controller, called the GMAC200 in the BSP and T527 datasheet, and referred to as GMAC1 for numbering. This controller, according to BSP sources, is fully compatible with a slightly newer version of the Synopsys DWMAC core. The glue layer around the controller is the same as found around older DWMAC cores on Allwinner SoCs. The only slight difference is that since this is the second controller on the SoC, the register for the clock delay controls is at a different offset. Last, the integration includes a dedicated clock gate for the memory bus and the whole thing is put in a separately controllable power domain. Add a compatible string entry for it, and work in the requirements for a second clock and a power domain. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Chen-Yu Tsai <wens@csie.org> Link: https://patch.msgid.link/20250925191600.3306595-2-wens@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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.