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[ Upstream commit0e0a8e35d7] Following sm8150/sm8250 update sdm845 capacity-dmips-mhz and dynamic-power-coefficient based on the measurements [1], [2]. The energy model dynamic-power-coefficient values were calculated with DPC = µW / MHz / V^2 for each OPP, and averaged across all OPPs within each cluster for the final coefficient. Voltages were obtained from the qcom-cpufreq-hw driver that reads voltages from the OSM LUT programmed into the SoC. Normalized DMIPS/MHz capacity scale values for each CPU were calculated from CoreMarks/MHz (CoreMark iterations per second per MHz), which serves the same purpose. For each CPU, the final capacity-dmips-mhz value is the C/MHz value of its maximum frequency normalized to SCHED_CAPACITY_SCALE (1024) for the fastest CPU in the system. For more details on measurement process see the commit message for the commit6aabed5526("arm64: dts: qcom: sm8250: Add CPU capacities and energy model"). [1] https://github.com/kdrag0n/freqbench [2] https://github.com/kdrag0n/freqbench/tree/master/results/sdm845/main Cc: Danny Lin <danny@kdrag0n.dev> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20220315141104.730235-1-dmitry.baryshkov@linaro.org Signed-off-by: Sasha Levin <sashal@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.