AMD Processor P-State driver

modulename: amd_pstate.ko

configname: CONFIG_X86_AMD_PSTATE

Linux Kernel Configuration
└─>Power management and ACPI options
└─>CPU Frequency scaling
└─>ACPI (Advanced Configuration and Power Interface) Support
└─>AMD Processor P-State driver
In linux kernel since version 5.2 (release Date: 2019-07-07)  
This driver adds a CPUFreq driver which utilizes a fine grain
processor performance frequency control range instead of legacy
performance levels. _CPC needs to be present in the ACPI tables
of the system.

For details, take a look at:
Documentation/admin-guide/pm/amd-pstate.rst.

If in doubt, say N.

source code: