AMD Elan SC400 and SC410

modulename: elanfreq.ko

configname: CONFIG_ELAN_CPUFREQ

Linux Kernel Configuration
└─>Power management and ACPI options
└─>CPU Frequency scaling
└─>AMD Elan SC400 and SC410
In linux kernel since version 2.6.12 )
This adds the CPUFreq driver for AMD Elan SC400 and SC410
processors.

You need to specify the processor maximum speed as boot
parameter: elanfreq=maxspeed (in kHz) or as module
parameter "max_freq".

For details, take a look at <file:Documentation/cpu-freq/>.

If in doubt, say N.
source code: