Set CPU Frequency permanent at 70?

[Jon]

Hi, I got a 4g ipod. Rockbox is unstable, and locks/crashes the ipod. By reading some thread I found out that setting the cpu frequency to 70 in the debug menu would help, and it has. It does not crash any more.

Anyways.. the "problem" now is that the cpu frequency is reset every time the ipod reboots. Is there any way to set the frequency to 70 permanent?

Thanks!

[Llorean]

Oddly enough, before we had CPU scaling support, it WAS set permanently at 70.

There's not a way to do it, because once it works properly, there will never be any reason to do so. Just have patience for the bugs to be fixed, or compile your own build with CPU scaling disabled.

[Jon]

okay, thanks!

Keep up the good work!

[shanepardue]

how do i change the cpu frequency? i found it in the debug menu, but it won't let me change it. my ipod freezes up at least once every time i play all the way through an album.

[michael.conner]

If you're compiling your own Rockbox, comment out the line that reads "#define HAVE_ADJUSTABLE_CPU_FREQ" by putting "// " in front of the "#" sign in the file "config_ipod4g.h".  Once you compile it, you'll have a custom build that has CPU scaling disabled.  

I did this and it worked just fine when I had a 4G iPod.  I ended up selling my 4G on ebay and getting a 5G, to be honest, which plays nicer w/Rockbox.

[shanepardue]

excuse my ignorance, but i looked everywhere in the rockbox folders viewing hidden files and all...i can't seem to find the config file you mentioned. am i doing something wrong?

thanks for helping!

[senab]

it's in /firmware/export/

and is called config-ipod4g.h

The line you are looking for is around 107.

[shanepardue]

i'm having a hard time compilling..i couldn't find the "arm-elf-gcc" anywhere. i did find an old version of it and this is my output from "make"

/build$ make
make[1]: `rdf2binary' is up to date.
make[1]: `convbdf' is up to date.
make[1]: `scramble' is up to date.
make[1]: `ipod_fw' is up to date.
make[1]: `bmp2rb' is up to date.
make[1]: `codepages' is up to date.
cpp0: config.h: No such file or directory
CONVBDF
Header parsed
CC sysfont.c
cc1: Invalid option `long-calls'
make[1]: *** [/media/ipod/build/firmware/sysfont.o] Error 1
make: *** [all] Error 2

[lenny]

what platform are you on?
have you set up a cross compiler? If not:
Windows - http://www.rockbox.org/twiki/bin/view/Main/CygwinDevelopment
Non-Windows - the rockboxdev.sh script included in the tools/ directory

Hope this helps, otherwise sorry if I've misinterpreted your situation.

[afruff23]

Also, could we please remove the peakmeters from rockbox default. Some people experience playback problems on certain targets. This and permanent CPU frequency can help reduce the number of bug reports for certain targets.

[Llorean]

Again:

The CPU frequency should not be permanently set to 70, because when everything is working RIGHT, then it won't cause a problem. It would be silly to work around the problem temporarily instead of just solving it. You are not users right now, you are TESTERS. If you don't like that it freezes, don't use it, but trying to put in a hack to make it more usable is a waste of time, because that means a programmer stops trying to fix the problem just to make a silly change that he'll have to remove later.

Rockbox is not released. Neither of these bugs will exist when it's in a release state. Hacking around them is a silly and pointless waste of time and effort that could go toward fixes that are actually permanent in nature.

[psycho_maniac]

i would just like to add  

Quote from: Llorean on May 23, 2006, 09:31:22 PM
Rockbox isn't for users right now, especially on iPod. It's for testers and developers, so the focus should be entirely on actually solving long term problems, not creating workarounds for people to use UNTIL those problems are solved.

[Shovas]

This issue may be related to ipod4g cpu frequency modulation. Check here for more details:

http://forums.rockbox.org/index.php?topic=9129.0