Old imx6q machine code makes RGMII/RMII clock direction decision based on configuration of "ptp" clock. "enet_out" is not used and make no real sense, since we can't configure it as output or use it as clock provider. Instead of "enet_out" use "enet_clk_ref" which is actual selector to choose between internal and external clock source: FEC MAC <---------- enet_clk_ref <--------- SoC PLL \ ^------<-> refclock PAD (bi directional) Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@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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