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ARM clk could only source from divcore or hsrun_divcore. Follow what we already used on i.MX7D and i.MX8M SoCs, use imx_clk_hw_cpu API. When ARM core is running normaly, whether divcore or hwrun_divcore will finally source from SPLL_PFD0. However SPLL_PFD0 is marked with CLK_SET_GATE, so we need to disable SPLL_PFD0, when configure the rate. So add CORE and HSRUN_CORE virtual clk to make it easy to configure the clk using imx_clk_hw_cpu API. Since CORE and HSRUN_CORE already marked with CLK_IS_CRITICAL, no need to set ARM as CLK_IS_CRITICAL. And when set the rate of ARM clk, prograting it the parent with CLK_SET_RATE_PARENT will finally set the SPLL_PFD0 clk. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Abel Vesa <abel.vesa@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org> |
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| fs | ||
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| init | ||
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| kernel | ||
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| .clang-format | ||
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| README | ||
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.