CPU frequency cooling device

configname: CONFIG_CPU_FREQ_THERMAL

Linux Kernel Configuration
└─>Device Drivers
└─>Thermal drivers
└─>CPU frequency cooling device
In linux kernel since version 5.1 (release Date: 2019-05-05)  
This implements the generic cpu cooling mechanism through frequency
reduction. An ACPI version of this already exists
(drivers/acpi/processor_thermal.c).
This will be useful for platforms using the generic thermal interface
and not the ACPI interface.