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If boost sysfs (/sys/devices/system/cpu/cpufreq/boost) file is present turbo-boost is feature is supported in the hardware. By default this feature should be enabled. But to disable/enable it write to the sysfs file. Use the same to control this feature via cpupower. To enable: cpupower set --turbo-boost 1 To disable: cpupower set --turbo-boost 0 Acked-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Wyes Karny <wyes.karny@amd.com> Tested-by: Perry Yuan <Perry.Yuan@amd.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>