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Re: Debian support for the lastest Powerbook 12" (1,33Ghz)



On Sat, Jul 03, 2004 at 01:21:14PM +0200, Djoumé SALVETTI wrote:
> Le vendredi 07/02/04 Luis Sanjuan <lj.sanjuan@ya.com> a écrit :
> > FYI. From kernel Documentation:
> > 
> > CONFIG_CPU_FREQ_PROC_INTF:
> > 
> > This enables the /proc/cpufreq interface for controlling
> > CPUFreq. Please note that it is recommended to use the sysfs
> > interface instead (which is built automatically).
> > 
> > CONFIG_CPU_FREQ_24_API:
> > 
> > This enables the /proc/sys/cpu/ sysctl interface for controlling
> > the CPUFreq,"userspace" governor. This is the same interface                           
> > as known from the 2.4.-kernel patches for CPUFreq, and offers
> > the same functionality as long as "userspace" is the                                   
> > selected governor for the specified CPU.
> > 
> > I assume that different interfaces are not incompatible. 
> 
> Yes, I also think so because I already use the two interfaces in
> parallel on other computers (x86).
> 
> > Can you see anything on /proc/sys/cpu ? 
> 
> gotan:/proc/sys/cpu# find
> .
> ./0
> ./0/speed
> ./0/speed-min
> ./0/speed-max
> gotan:/proc/sys/cpu# cat 0/*
> 0
> 0
> 0
> gotan:/proc/sys/cpu# 
> 
> > Are you sure you are using a freq control program and add the
> > corresponding modules. 
> 
> gotan:/proc/sys/cpu# lsmod | grep freq
> cpufreq_powersave       2016  0 
> cpufreq_userspace      10104  0 
> 
> I don't use any freq control program yet.
> 
> > What is the output of your /proc/cpuinfo ?
> 
> gotan:/proc/sys/cpu# cat /proc/cpuinfo 
> processor       : 0
> cpu             : 7447A, altivec supported
> clock           : 1333MHz
> revision        : 1.1 (pvr 8003 0101)
> bogomips        : 663.55
> machine         : PowerBook6,4
> motherboard     : PowerBook6,4 MacRISC3 Power Macintosh 
> detected as     : 287 (Unknown Intrepid-based)
> pmac flags      : 00000008
> L2 cache        : 512K unified
> memory          : 512MB
> pmac-generation : NewWorld
> 
> What is yours? 

This is my cpuinfo. Clock is currently at 816MHz:

processor       : 0
cpu             : 7457, altivec supported
clock           : 816MHz
revision        : 1.1 (pvr 8002 0101)
bogomips        : 813.05
machine         : PowerBook5,3
motherboard     : PowerBook5,3 MacRISC3 Power Macintosh
detected as     : 287 (PowerBook G4 17")
pmac flags      : 0000000a
L2 cache        : 512K unified
memory          : 512MB
pmac-generation : NewWorld

At startup PowerMac CPU freq driver is registered:

luis@melite:~$ dmesg | grep -A 1 'frequency driver'

Registering PowerMac CPU frequency driver
Low: 816 Mhz, High: 1333 Mhz, Boot: 816 Mhz, switch method: GPIOs

Can you see anything as that ?

> My understanding is that my CPU ID (PowerBook6,4) is not
> yet supported by the Linux kernel because in
> linux-2.6.7/arch/ppc/platforms/pmac_cpufreq.c I see :
> 
> |           /* Check for newer machines */
> |           if (machine_is_compatible("PowerBook3,4") ||
> |               machine_is_compatible("PowerBook3,5") ||
> |               machine_is_compatible("MacRISC3")) {
> 
> But some people seems to have their Powerbook 12" 867Mhz supported (by
> cpufreq) which have a cpuinfo that give :
> 
> cpu             : 7455, altivec supported
> clock           : 53MHz
> revision        : 3.3 (pvr 8001 0303)
> bogomips        : 51.90
> machine         : PowerBook6,1
> motherboard     : PowerBook6,1 MacRISC3 Power Macintosh
> detected as     : 271 (Unknown Pangea-based)
> pmac flags      : 00000008
> L2 cache        : 256K unified
> memory          : 384MB
> pmac-generation : NewWorld
> 
> So I supposed it's the MacRISC3 compatibilty mode that must be used in
> cpufreq code, but it doesn't seems to work with my CPU...
> 
> 

Maybe. Can anybody confirm wheather PowerBook6,4 is supported
by cpufreq ?



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