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On am642-evm the CPSW3g ext. Port1 is directly connected to TI DP83867 PHY and Port2 is connected to TI DP83869 PHY which is shared with ICSS subsystem. The TI DP83869 PHY MII interface is configured using pinmux for CPSW3g, while MDIO bus is connected through GPIO controllable 2:1 TMUX154E switch (MDIO GPIO MUX) which has to be configured to route MDIO bus from CPSW3g to TI DP83869 PHY. Hence add networking support for am642-evm: - add CPSW3g MDIO and RGMII pinmux entries for both ext. ports; - add CPSW3g nodes; - add mdio-mux-multiplexer DT nodes to represent above topology. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Link: https://lore.kernel.org/r/20210304211038.12511-4-grygorii.strashko@ti.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 Restructured Text 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.