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Difference between revisions of "Leapster Explorer: Over Clock"

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(Test results)
 
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It is very simple to overclock (or underclock) your explorer.
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== Summary ==
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This tutorial shows you how to overclock or underclock your Leapster Explorer.
  
== Preliminary Overclock ==
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== Hardware Needed ==
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[[LeapFrog_Pollux_Platform:_Console_Access| Console Access]]
  
Lets say you want to boost the speed up to 532.5mhz?
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== Temporarily ==
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To set the CPU Frequency run this command, example is 532.5mhz:
  
  echo 532500000 > /usr/speed
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  # echo 532500000 > /usr/speed
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# cat /usr/speed > /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz
  
to speed up your system it is as easy as typing the following
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== Permanent  ==
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Once you have tested your overclock, and are sure that it is stable, and you haven't made any typos. You can make the change permanent.
  
cat /usr/speed > /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz
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There is a line in /etc/init.d/rcS that checks for /flags/cpu_freq_in_hz, and automatically copies the contents to /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz
 
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enjoy
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== Living Dangerously ==
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Once you have tested your overclock, and are sure that it is stable, and you haven't made any typos...
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You can actually get the startup script to automagically set the cpu freq for you!
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There is a line in /etc/init.d/rcS that checks for /flags/cpu_freq_in_hz, and automatically copies the contents to /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz!
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It is important that you test your chosen cpu frequency first using the procedure in section 1, or you might be left with an unbootable device.
 
It is important that you test your chosen cpu frequency first using the procedure in section 1, or you might be left with an unbootable device.
  
  echo 532500000 > /flags/cpu_freq_in_hz
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  # echo 532500000 > /flags/cpu_freq_in_hz
  
 
Now just reboot, and your Leapster Explorer will automatically boot at the faster speed.  Again, '''this is dangerous''', so test it first with the above method. I cannot stress this enough.
 
Now just reboot, and your Leapster Explorer will automatically boot at the faster speed.  Again, '''this is dangerous''', so test it first with the above method. I cannot stress this enough.
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At 164MHz the display went blank, and serial port stopped responding.
 
At 164MHz the display went blank, and serial port stopped responding.
 
At 600MHz a kernel panic occurred.
 
At 600MHz a kernel panic occurred.
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[[Category:Leapster Explorer]]
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[[Category:LeapFrog Pollux Platform]]

Latest revision as of 22:33, 23 July 2011

Summary

This tutorial shows you how to overclock or underclock your Leapster Explorer.

Hardware Needed

Console Access

Temporarily

To set the CPU Frequency run this command, example is 532.5mhz:

# echo 532500000 > /usr/speed
# cat /usr/speed > /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz

Permanent

Once you have tested your overclock, and are sure that it is stable, and you haven't made any typos. You can make the change permanent.

There is a line in /etc/init.d/rcS that checks for /flags/cpu_freq_in_hz, and automatically copies the contents to /sys/devices/platform/lf1000-gpio/cpu_freq_in_hz

It is important that you test your chosen cpu frequency first using the procedure in section 1, or you might be left with an unbootable device.

# echo 532500000 > /flags/cpu_freq_in_hz

Now just reboot, and your Leapster Explorer will automatically boot at the faster speed. Again, this is dangerous, so test it first with the above method. I cannot stress this enough.

Test Results

GrizzlyAdams was able to get his to run at any arbitrary speed between 180MHz and 580Mhz. At 164MHz the display went blank, and serial port stopped responding. At 600MHz a kernel panic occurred.