Platform Communication Channel Driver

modulename: pcc.ko
configname: CONFIG_PCC

Linux Kernel Configuration
└─> Device Drivers
└─> Mailbox Hardware Support
└─> Platform Communication Channel Driver

ACPI 5.0+ spec defines a generic mode of communication
between the OS and a platform such as the BMC. This medium
(PCC) is typically used by CPPC (ACPI CPU Performance management),
RAS (ACPI reliability protocol) and MPST (ACPI Memory power
states). Select this driver if your platform implements the
PCC clients mentioned above.

source code: