AMD Mobile Athlon/Duron PowerNow!

modulename: powernow-k7.ko

configname: CONFIG_X86_POWERNOW_K7

Linux Kernel Configuration
└─>CPU Frequency scaling
└─>AMD Mobile Athlon/Duron PowerNow!
In linux kernel since version 2.6.12  
This adds the CPUFreq driver for mobile AMD K7 mobile processors.

For details, take a look at Documentation/cpu-freq/.

If in doubt, say N.

source code:
selects
CONFIG_CPU_FREQ_TABLE

depends
CONFIG_CPU_FREQ
CONFIG_X86_32