AMD Mobile K6-2/K6-3 PowerNow!

modulename: powernow-k6.ko

configname: CONFIG_X86_POWERNOW_K6

Linux Kernel Configuration
└─>CPU Frequency scaling
└─>AMD Mobile K6-2/K6-3 PowerNow!
In linux kernel since version 2.6.12  
This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
AMD K6-3+ processors.

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

If in doubt, say N.

source code:
selects
CONFIG_CPU_FREQ_TABLE