Support for Apple PowerBooks

modulename: pmac32-cpufreq.ko

configname: CONFIG_CPU_FREQ_PMAC

Linux Kernel Configuration
└─>Support for Apple PowerBooks
In linux kernel since version 2.6.15 (release Date: 2006-01-02)  
This adds support for frequency switching on Apple PowerBooks,
this currently includes some models of iBook & Titanium
PowerBook.

source code:
drivers/cpufreq/pmac32-cpufreq.c
selects
CONFIG_CPU_FREQ_TABLE