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ba5f9fa0ca
For "mem" mode suspend on i.MX8 SoCs, MU settings could be lost because its power is off, so save/restore is needed for MU settings during suspend/resume. However, the restore can ONLY be done when MU settings are actually lost, for the scenario of settings NOT lost in "freeze" mode suspend, since there could be still IPC going on multiple CPUs, restoring the MU settings could overwrite the TIE by mistake and cause system freeze, so need to make sure ONLY restore the MU settings when it is powered off, Anson fixes this by checking whether restore is actually needed when resume. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> |
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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.