RK3188 CPU/GPU overclock kernel

[bd6...@gmail.com]

Hi Tom,

May I know where can get the RK3188 CPU/GPU overclock kernel & image for android/Ubuntu/Linux OS?

Pls advise us , Tks.

[bd6...@gmail.com]

bd6...@gmail.com於 2014年1月18日星期六UTC+8下午1時37分33秒寫道：

> Hi Tom,
>
> May I know where can get the RK3188 CPU/GPU overclock kernel & image for android/Ubuntu/Linux OS?
>
> Pls advise us , Tks.

SetCPU APP can not adjust CPU clock & voltage.

Is the kernel not open for CPU overclocking ?

[Tom Cubie]

On Mon, Jan 20, 2014 at 5:44 PM, <bd6...@gmail.com> wrote:
> bd6...@gmail.com於 2014年1月18日星期六UTC+8下午1時37分33秒寫道：
>> Hi Tom,
>>
>> May I know where can get the RK3188 CPU/GPU overclock kernel & image for android/Ubuntu/Linux OS?

Currently you can set the cpu freq via the /sys interface.

root@radxa:cd /sys/devices/system/cpu/cpu0/cpufreq/
root@radxa:/sys/devices/system/cpu/cpu0/cpufreq# cat
scaling_available_frequencies
312000 504000 816000 1008000 1200000 1416000 1608000

You can adjust the cpu freq by:
root@radxa:/sys/devices/system/cpu/cpu0/cpufreq# echo 1008000 > scaling_max_freq

>>
>> Pls advise us , Tks.
>
> SetCPU APP can not adjust CPU clock & voltage.
>
> Is the kernel not open for CPU overclocking ?
>

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[bd6...@gmail.com]

Hi Tom,

SetCPU APP can adjust CPU clock to 1608MHz
Does the RK3188 can overclock to 1.9GHz?

Can I modify "scaling_max_freq" file from 1608000 to 1900000 directly?
May I know this RK3188 chip overclocking safety range?

Tks.

[Tom Cubie]

Over clock higher than 1.6G is not safe. You need to modify the kernel
source code to change volage and freq table.

>
> Tks.