Hardware Reference
In-Depth Information
The initial_turbo option allows the boot process to proceed at normal clock rates
until the process has progressed to a certain point. Some people on Internet forums that
experience SD card corruption from overclocking will suggest the initial_turbo option
as a solution.
initial_turbo
Description
0
No timed turbo mode (default)
60
Maximum number of seconds after boot before enabling turbo mode
Temperature Limit
The temp_limit configuration option allows the user to override the default safety limit.
Increasing this value beyond 85ºC voids your warranty.
When the SoC temperature exceeds temp_limit , the clocks and voltages are set to
default values for safer operation.
temp_limit
Description
85
Temperature limit in Celsius (default)
> 85
Voids your warranty
ARM CPU Frequency
The parameter arm_freq sets the clock frequency of the ARM CPU in MHz. This option
applies in non-turbo and turbo modes.
arm_freq
Description
700
Default ARM CPU frequency, in MHz
> 700
May void warranty—check related conditions
Minimum ARM CPU Frequency
This option can be used when using dynamic clocking of the ARM CPU. This sets the
lowest clock speed for the ARM.
arm_freq_min
Description
700
Default ARM CPU frequency in MHz
> 700
May void warranty—check related conditions
 
 
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