SFI Performance-States driver

modulename: sfi-cpufreq.ko

configname: CONFIG_X86_SFI_CPUFREQ

Linux Kernel Configuration
└─>SFI Performance-States driver
In linux kernel since version 4 (release Date: 2015-04-12)
This adds a CPUFreq driver for some Silvermont based Intel Atom
architectures like Z34xx and Z35xx which enumerate processor
performance states through SFI.

If in doubt, say N.