Athlon 64 UP CPU -- no frequency scaling support?

[Aioanei Rares]

Dave Jones wrote:
> On Thu, Oct 29, 2009 at 05:38:00PM +0200, Aioanei Rares wrote:
>  > The cpufreq-* modules are loaded, I tried both available Fedora kernels 
>  > (2.6.31.5-96.fc12.x86_64 and
>  >   2.6.31.1-56.fc12.x86_64, acpitool --cpu says :
>  > 
>  > CPU type               : AMD Athlon(tm) 64 Processor 3800+
>  >    CPU speed              : 2400.392 MHz
>  >    Cache size             : 512 KB
>  >    Bogomips               : 4800.78
>  >    Processor ID           : 0
>  >    Bus mastering control  : yes
>  >    Power management       : no
>  >    Throttling control     : no
>  >    Limit interface        : no
>  >    Active C-state         : C0
>  >    C-states (incl. C0)    : 0
>  > 
>  > But...in works in $OTHER_DISTRO and /proc/cpuinfo says
>  > 
>  > processor    : 0
>  > vendor_id    : AuthenticAMD
>  > cpu family    : 15
>  > model        : 95
>  > model name    : AMD Athlon(tm) 64 Processor 3800+
>  > stepping    : 2
>  > cpu MHz        : 2400.392
>  > cache size    : 512 KB
>  > fpu        : yes
>  > fpu_exception    : yes
>  > cpuid level    : 1
>  > wp        : yes
>  > flags        : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov 
>  > pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp lm 
>  > 3dnowext 3dnow up rep_good extd_apicid pni cx16 lahf_lm svm extapic 
>  > cr8_legacy
>  > bogomips    : 4800.78
>  > TLB size    : 1024 4K pages
>  > clflush size    : 64
>  > cache_alignment    : 64
>  > address sizes    : 40 bits physical, 48 bits virtual
>  > power management: ts fid vid ttp tm stc
>  > 
>  > 
>  > ...so it obviously should support cpu frequency scaling. Any ideas?
>
> What does cat /sys/devices/system/cpu/cpu0/cpufreq/* say ?
>
> 	Dave
>
>   
The folder cpufreq is nonexistant and /var/log/messages tells me there's 
a firmware bug so no frequency scaling available.