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Zaurus 中文论坛 Forum Index » pdaXrom & debain & openBSD

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pdaxrom超频至624指南
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joerkky



Joined: 10 Dec 2006
Posts: 75

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PostPosted: 2006-Dec-13 Wed, pm4:52 Reply with quote
 Post subject: pdaxrom超频至624指南

pdaxrom r121里面的CPU超频软件cpuoverclock.py有bug,不能直接超到624MHz
想超到624MHz的可以这样做:
cat /sys/devices/system/cpu/cpu0/cpufreq/show_frequency_and_voltage
会出现频率和核心电压的对应表。
我的是
...
416000 1400
520000 1500
624000 1500
也就是说上了500MHz之后核心电压应该调成1500mv才行(默认是416000 1400)
调电压可以这样做:
echo 1500mv > /sys/devices/system/cpu/cpu0/cpufreq/cpu-voltage (调成1500mv)
然后就可以超到624MHz了:
dvfm 16 6 1 2 1(其中16是主频,6是倍频,16*6*6.5=624MHz)
默认400是dvfm 16 4 1 2 1
所有的主倍频组合在
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_freqencies
里面。

改天把我写的shell传上来.
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badog
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Joined: 01 Nov 2006
Posts: 1021

小企鹅: 6575

PostPosted: 2006-Dec-13 Wed, pm5:18 Reply with quote
 Post subject:

521MHZ比较能长期运行,624M耗电大,建议~~
写个SH比较好.
方便大家
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rogerbaker



Joined: 10 Nov 2006
Posts: 24

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PostPosted: 2006-Dec-13 Wed, pm9:40 Reply with quote
 Post subject:

佩服!
请问r11beta1 版本里的超频软件怎么超?我输入cat /sys/。。。 显示没有此目录或文件?
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badog
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PostPosted: 2006-Dec-13 Wed, pm11:33 Reply with quote
 Post subject:

27X CPU是电压控制频率,与25X不同.
只要写入电压值,27X CPU频率就会变化
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joerkky



Joined: 10 Dec 2006
Posts: 75

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PostPosted: 2006-Dec-14 Thu, pm8:08 Reply with quote
 Post subject:

实验结果:只变电压对频率没影响。
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badog
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PostPosted: 2006-Dec-14 Thu, pm8:57 Reply with quote
 Post subject:

是吗?上次我看资料说,27X CPU 主频是电压控制型的
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