These clocks are only modified as part of DRAM frequency switches during which DRAM itself is briefly inaccessible. The switch is performed with a SMC call to by TF-A which runs from a SRAM area; upon returning to linux several clocks bits are modified and we need to update them. For rate bits an easy solution is to just mark with CLK_GET_RATE_NOCACHE so that new rates are always read back from registers. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> Acked-by: Stephen Boyd <sboyd@kernel.org> 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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