Looking at hellcreek_phylink_get_caps(), I see that depending on whether is_100_mbits is set, speeds of 1G or of 100M will be advertised. The de1soc_r1_pdata sets is_100_mbits to true. The PHY modes declared in the capabilities are MII, RGMII and GMII. GMII doesn't support 100Mbps, and as for RGMII, it would be a bit implausible to me to support this PHY mode but limit it to only 25 MHz. So I've settled on MII as a phy-mode in the example, and a fixed-link of 100Mbps. As a side note, there exists such a thing as "rev-mii", because the MII protocol is asymmetric, and "mii" is the designation for the MAC side (expected to be connected to a PHY), and "rev-mii" is the designation for the PHY side (expected to be connected to a MAC). I wonder whether "mii" or "rev-mii" should actually be used here, since this is a CPU port and presumably connected to another MAC. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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.
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