According to Figure 8.1.1 ("Block Diagram of CPG (R-Car V3U-AD)") in the R-Car V3U Series User's Manual Rev. 0.5, the parent of the CBFUSA clock is EXTAL. Fixes: 17bcc8035d2d19fc ("clk: renesas: cpg-mssr: Add support for R-Car V3U") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Link: https://lore.kernel.org/r/20201019120614.22149-3-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 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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