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0836c8604a
i.MX93 LPCG is different from i.MX8M CCGR. Although imx_clk_hw_gate4_flags is used here, it not strictly match i.MX93. i.MX93 has such design: - LPCG_DIRECT use BIT0 as on/off gate when LPCG_AUTHEN CPU_LPM is 0 - LPCG_LPM_CUR use BIT[2:0] as on/off gate when LPCG_AUTHEN CPU_LPM is 1 The current implementation suppose CPU_LPM is 0, and use LPCG_DIRECT BIT[1:0] as on/off gate. Although BIT1 is touched, actually BIT1 is reserved. And imx_clk_hw_gate4_flags use mask 0x3 to determine whether the clk is enabled or not, but i.MX93 LPCG only use BIT0 to control when CPU_LPM is 0. So clk disabled unused during kernel boot not able to gate off the unused clocks. To match i.MX93 LPCG, introduce imx93_clk_gate. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Ye Li <ye.li@nxp.com> Reviewed-by: Jacky Bai <ping.bai@nxp.com> Reviewed-by: Abel Vesa <abel.vesa@linaro.org> Signed-off-by: Abel Vesa <abel.vesa@linaro.org> Link: https://lore.kernel.org/r/20220830033137.4149542-6-peng.fan@oss.nxp.com |
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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.