[HOWTO] AMD Geode NX 1750 auf PC-Chips M811 als stromsparender VDR - Patch für 2.6.33 online

processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 6
model		: 8
model name	: AMD Geode(tm) NX 1750+
stepping	: 1
cpu MHz		: 1410.455
cache size	: 256 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow up
bogomips	: 2820.91
clflush size	: 32
power management: ts fid vid

powernowd: PowerNow Daemon v1.00, (c) 2003-2008 John Clemens
powernowd: Settings:
powernowd:   verbosity:        1
powernowd:   mode:             1     (AGGRESSIVE)
powernowd:   step:           100 MHz (100000 kHz)
powernowd:   lowwater:        20 %
powernowd:   highwater:       80 %
powernowd:   poll interval: 1000 ms
powernowd: Found 1 scalable unit:  -- 1 'CPU' per scalable unit
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq: No such file or directory


PowerNowd encountered and error and could not start.
Please make sure that:
 - You are running a v2.6.7 kernel or later
 - That you have sysfs mounted /sys
 - That you have the core cpufreq and cpufreq-userspace
   modules loaded into your kernel
 - That you have the cpufreq driver for your cpu loaded,
   (for example: powernow-k7), and that it works. Check
   'dmesg' for errors.
If all of the above are true, and you still have problems,
please email the author: clemej@alum.rpi.edu

root@VDR2:/usr/src/linux# lsmod
Module                  Size  Used by
video                  25232  0 
output                 11136  1 video
input_polldev          12040  0 
w83627hf               31760  0 
hwmon_vid              11520  1 w83627hf
lp                     17156  0 
parport                42476  1 lp
snd_intel8x0           37660  0 
snd_ac97_codec        112292  1 snd_intel8x0
ac97_bus                9984  1 snd_ac97_codec
snd_pcm                82948  2 snd_intel8x0,snd_ac97_codec
snd_timer              29320  1 snd_pcm
snd                    62500  4 snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer
sis_agp                15488  1 
soundcore              15456  1 snd
i2c_sis96x             12548  0 
pcspkr                 10752  0 
agpgart                42440  1 sis_agp
serio_raw              13572  0 
snd_page_alloc         17160  2 snd_intel8x0,snd_pcm
shpchp                 40340  0 
usbhid                 42208  0 
sis900                 28160  0 
mii                    13568  1 sis900

Jul 22 19:35:24 VDR2 kernel: [    9.533375] powernow-k8: Processor cpuid 681 not supported
Jul 22 19:35:24 VDR2 kernel: [    9.533408] powernow: PowerNOW! Technology present. Can scale: frequency and voltage.
Jul 22 19:35:24 VDR2 kernel: [    9.541376] powernow: No PST tables match this cpuid (0x781)
Jul 22 19:35:24 VDR2 kernel: [    9.541379] powernow: This is indicative of a broken BIOS.
Jul 22 19:35:24 VDR2 kernel: [    9.541382] powernow: Trying ACPI perflib
Jul 22 19:35:24 VDR2 kernel: [    9.541388] powernow: ACPI perflib can not be used in this platform
Jul 22 19:35:24 VDR2 kernel: [    9.541391] powernow: ACPI and legacy methods failed
Jul 22 19:35:24 VDR2 kernel: [    9.541394] powernow: See http://www.codemonkey.org.uk/projects/cpufreq/powernow-k7.html
Jul 22 19:35:24 VDR2 kernel: [   20.068865] powernow_k7: module is already loaded
Jul 22 20:14:22 VDR2 kernel: [ 2359.438322] powernow_k7: module is already loaded
Jul 22 20:16:34 VDR2 kernel: [ 2491.523597] powernow_k7: module is already loaded
Jul 22 20:17:50 VDR2 kernel: [ 2567.334133] powernow_k7: module is already loaded
Jul 22 20:21:13 VDR2 kernel: [ 2770.291185] powernow_k7: module is already loaded
Jul 22 20:21:56 VDR2 kernel: [ 2813.304667] powernow_k7: module is already loaded
Jul 22 20:22:04 VDR2 kernel: [ 2821.881329] powernow_k7: module is already loaded
Jul 22 20:25:30 VDR2 kernel: [ 3027.734131] powernow_k7: module is already loaded

root@VDR2:/usr/src/linux# modinfo powernow-k7
filename:       /lib/modules/2.6.28.9-powernow-fix/kernel/arch/x86/kernel/cpu/cpufreq/powernow-k7.ko
license:        GPL
description:    Powernow driver for AMD K7 processors.
author:         Dave Jones <davej@redhat.com>
srcversion:     F3DFF8435E39BD141DD29B7
depends:        
vermagic:       2.6.28.9 SMP mod_unload modversions 586 
parm:           acpi_force:Force ACPI to be used. (int)
parm:           overwrite_table:overwrite table with manually settings (int)
parm:           fsb:(MHz) overrides the calculated FSB (uint)
parm:           multiplier:Specifiy up to 10 multipliers, multiply them by 10: 5->50, 5.5->55 (array of int)
parm:           voltage:Specify voltages in respect to the given multipliers, specify them in mV: 1.275V -> 1275 (array of int)
parm:           switch_latency:Set state transition latency in microseconds (default 200us) (int)

# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=y
CONFIG_CPU_FREQ_DEBUG=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_STAT_DETAILS=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y


#
# CPUFreq processor drivers
#


# CONFIG_X86_ACPI_CPUFREQ is not set
# CONFIG_X86_POWERNOW_K6 is not set
CONFIG_X86_POWERNOW_K7=m
CONFIG_X86_POWERNOW_K7_ACPI=y
# CONFIG_X86_POWERNOW_K8 is not set
# CONFIG_X86_POWERNOW_K8_ACPI is not set
# CONFIG_X86_GX_SUSPMOD is not set
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
# CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE is not set
# CONFIG_X86_SPEEDSTEP_ICH is not set
# CONFIG_X86_SPEEDSTEP_SMI is not set
# CONFIG_X86_P4_CLOCKMOD is not set
# CONFIG_X86_CPUFREQ_NFORCE2 is not set
# CONFIG_X86_LONGRUN is not set
# CONFIG_X86_LONGHAUL is not set
CONFIG_X86_E_POWERSAVER=m