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This file >> + conveys the minimum performance level at which the platform >> + may run. Minimum performance may be set to any performance >> + value in the range [Lowest Performance, Highest Performance], >> + inclusive but must be set to a value that is less than or >> + equal to that specified by the Maximum Performance Register. >> + >> + Writing to this file only has meaning when Autonomous Selection >> + is enabled. > In the ACPI specification I don't see a clear dependency between the > minimum and maximum performance registers and autonomous selection. > There's nothing to say that min and max do not have meaning with > autonomous selection is disabled. > > Thanks, > Ionela. Yes, will remove the text about dependency on autonomous selection in v4. Thank you, Sumit Gupta >> + >> + This file is only present if the cppc-cpufreq driver is in use. >> + >> +What: /sys/devices/system/cpu/cpuX/cpufreq/max_perf >> +Date: September 2025 >> +Contact: linux-pm@vger.kernel.org >> +Description: Minimum Performance >> + >> + Read/write a 32 bits value from/to this file. This file conveys >> + the maximum performance level at which the platform may run. >> + Maximum performance may be set to any performance value in the >> + range [Lowest Performance, Highest Performance], inclusive. >> + >> + Writing to this file only has meaning when Autonomous Selection is >> + enabled. >> + >> + This file is only present if the cppc-cpufreq driver is in use. >> + >> +What: /sys/devices/system/cpu/cpuX/cpufreq/perf_limited >> +Date: September 2025 >> +Contact: linux-pm@vger.kernel.org >> +Description: Minimum Performance >> + >> + Read/write a 32 bits value from/to this file. This file indicates >> + to OSPM that an unpredictable event has limited processor >> + performance, and the delivered performance may be less than >> + desired/minimum performance. >> + >> + This file is only present if the cppc-cpufreq driver is in use. >> >> What: /sys/devices/system/cpu/cpu*/cache/index3/cache_disable_{0,1} >> Date: August 2008 >> -- >> 2.34.1 >> >>