How to Overclock ODROID-C1

  • Ubuntu : The version should be 3.10.104-177 or higher version.
  • Android : The version should be Android v3.4 (Nov 28,2016) or higher version.

The available list of cpu frequency set

frequency notation on boot.ini clock spec.
1.824 GHz “1824” overclock
1.728 GHz “1728” overclock
1.632 GHz “1632” overclock
1.536 GHz “1536” spec in
1.488 GHz “1488” spec in

You can check the available frequency set with the following node.

# cat  /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequency

96000 192000 312000 408000 504000 600000 696000 816000 912000 1008000 1104000 1200000 1296000 1416000
1488000 1536000 1632000 1728000 1824000

In case of Android, we don't recommend 1.824GHz cpu frequency on Android system so far
because system booting and heavy load test with 1.824GHz is unstable currently.

Adjust CPU Max Frequency using boot.ini

How to Set boot.ini

Please modify max_freq based on the aforementioned frequency table. The unit of max_freq in boot.ini in MHz.

### boot.ini

# CPU Max Frequency
# Possible Values: 96 192 312 408 504 600 720 816
# 1008 1200 1320 1488 1536 1632 1728 and 1824
# setenv max_freq "1488"
# setenv max_freq "1536"
# setenv max_freq "1632"
# setenv max_freq "1728"
# setenv max_freq "1824"
setenv max_freq "1536"

# Boot Arguments
setenv bootargs "root=UUID=e139ce78-9841-40fe-8823-96a304a09859 rootwait ro ${condev} no_console_suspend vdaccfg=0xa000 logo=osd1,loaded,0x7900000,720p,full dmfc=3
cvbsmode=576cvbs hdmimode=${m} m_bpp=${m_bpp} vout=${vout_mode} ${disableuhs} ${hdmi_hpd} ${hdmi_cec} ${enabledac} monitor_onoff=${monitor_onoff} max_freq=${max_freq}"
How to Check new max cpu frequency

You can check if the current max cpu frequency via the below node.

# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
1824000

The node cpuinfo_cur_freq shows the cpu frequency that is currently working.
Please note governor policy should be performance if you want to check the max cpu frequency and run max cpu frequency unconditionally.

# echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 
performance
# cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 
1824000
en/c1_overclocking.txt · Last modified: 2016/11/28 16:17 by joy.cho
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