CPU Freq for 1.66 Ghz PowerBooks

[Jonathan Hartje]

Bruce,
    Thanks for the info. I'll give it a try. I downloaded the 2.6.11 
source yesterday and patched as Bill suggested. No luck. The machine 
halts just before the init phase. I'll try a new initrd to see if that 
helps. Thanks to all for the help.

bruce woller wrote:

> Jonathan:
> I built 2.6.11.5 last weekend.  I could generate initrd by the  
> following (as root):
> /sbin/mkinitrd initrd-2.6.11.5.img 2.6.11.5   <== modules are in  
> /lib/modules/2.6.11.5 from previous make modules_install
> cp initrd-2.6.11.5.img /boot/.
>
> change /etc/yaboot.conf to point to correct initrd . . .img
> ybin -v
>
> Good luck,
> Bruce
> On Mar 29, 2005, at 10:38 AM, Jonathan Hartje wrote:
>
>>  OK, so I've downloaded the 2.6.11 source and built it. I can not  
>> figure out how to make the initrd though... make initrd doesn't seem  
>> to work with the 2.6 kernels. (This is the first 2.6 kernel I've 
>> tried  to build). I looked for instructions via google/kernel.org but 
>> didn;t  find anything ppc related. Any ideas?
>>
>>
>>
>>  Jonathan Hartje wrote:
>>
>> Bill,
>>      Thanks for the help. I'll download the new kernel source and 
>> let  her rip. I'll keep the list updated on my results.
>>
>>  Jon
>>
>>  Bill Fink wrote:
>>
>> Hi Jonathan,
>>
>> On Thu Mar 24 2005, Jonathan Hartje wrote:
>>
>>
>>     I have one of the new 1.66 GHz PowerBooks with YDL 4.0.1 installed.
>> It seems as though cpufreq isn't happy with the new chip speed. Does
>> anyone know how/where to insert new information to get the clock speed
>> up to normal. I figure a newer kernel release is probably upcoming from
>> TSS, so I can wait if need be. Just wondering.
>>
>> You will need a new kernel.  Consult the thread on linuxppc-dev at:
>>
>>         http://ozlabs.org/pipermail/linuxppc-dev/2005-March/018580.html
>>
>> It includes a kernel patch you could try out (requires a 2.6.11  
>> kernel).
>>
>> There is also another thread dealing with sleeping and cpufreq 
>> issues  at:
>>
>>         http://ozlabs.org/pipermail/linuxppc-dev/2005-March/018655.html
>>
>> Or you could just wait as you suggested for TSS to release a new  
>> kernel.
>>
>>                                                 -Bill
>>
>>
>>
>> linuxppc-dev message from Benjamin Herrenschmidt:
>> ----------------------------------------------------------------------- 
>> ---------
>>
>> Subject: Newer laptops & CPU speed
>>
>> From: Benjamin Herrenschmidt
>> Date: Mon Mar 14 13:33:42 EST 2005
>>
>> Hi !
>>
>> It seems the new laptops are booting with CPU set to low
>> speed. /proc/cpuinfo outputs the wrong fequency (thinks it's high  
>> speed)
>> but bogomips shows that it's running at about half speed. This patch
>> against 2.6.11 (will not apply on 2.6.10) adds proper cpufreq 
>> support  so
>> that the boot speed is recognized (fixing /proc/cpuinfo output) and so
>> you can acutally use cpufreq interface & utilities to switch to full
>> speed (I recommend powernowd).
>>
>> This is completely untested as I don't have access to any of those new
>> models yet, so I'm waiting for some feedback before submitting  
>> upstream.
>>
>> Ben.
>>
>> [patch deleted]
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