PROBLEM: Amd powernow lowest freqency (athlon 4 1500+ palomino core) 2.6.16-7

[Janpieter Sollie <janpieter.sollie@UGent.be>]

Sir / mrs,

I think there is a bug in the cpufreq driver for powernow.

here's the system setup as described by /scripts/ver_linux:
---------------------------------------------------------------------------------------------------
Linux portablejp 2.6.16-gentoo-r7 #2 Fri May 19 17:29:06 Local time zone 
must be set--see zic manu i686 mobile AMD Athlon(tm) 4 1500+ Processor 
AuthenticAMD GNU/Linux

Gnu C                  3.3.5-20050130
Gnu make               3.80
binutils               2.16.1
util-linux             2.12r
mount                  2.12r
module-init-tools      3.0
e2fsprogs              1.38
reiserfsprogs          line
reiser4progs           line
pcmcia-cs              3.2.8
PPP                    2.4.2
Linux C Library        2.3.4
Dynamic linker (ldd)   2.3.4
Procps                 3.2.5
Net-tools              1.60
Kbd                    1.12
Sh-utils               5.2.1
udev                   058
Modules Loaded         r8169 parport_pc lp snd_pcm_oss snd_mixer_oss 
snd_seq_oss snd_seq_midi_event snd_seq snd_via82xx snd_ac97_codec 
snd_ac97_bus snd_pcm snd_timer snd_page_alloc snd_mpu401_uart 
snd_rawmidi snd_seq_device snd soundcore cifs evdev autofs4 genrtc dummy 
via_rhine libcrc32c yenta_socket rsrc_nonstatic parport pcmcia 
pcmcia_core ntfs usbhid usb_storage uhci_hcd ohci_hcd usbcore 
firmware_class md5 des deflate zlib_deflate zlib_inflate
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Problem description:
The driver reports following frequencies:
(cpy&paste from /sys/../cpufreq/scaling_available_frequencies)
300069 700161 800184 900207 1000230 1100253 1300299
The 300069 setting causes the system to hang immediately.
Symptoms:
echo 300069 > /sys/../cpufreq/scaling_setspeeds causes the system to 
hang (with userspace as governor ofc)
the governor powersave causes the system to hang
the governor conservative crashes sometimes during very idle periods.

I hope this report was helpful,

greetings,

Janpieter Sollie