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From: mihn <mihnsk@gmail.com>
To: linux-acpi@vger.kernel.org
Subject: cpu voltage change question
Date: Thu, 27 Jan 2011 01:10:53 -0800	[thread overview]
Message-ID: <1296119453.4653.1.camel@genix> (raw)

Hi,

I want to change voltage and frequency seperately.
With cpu-freq, i can change frequency, but cannot change voltage AFAIK.

Can I do this using cpu-freq?

If possible, how can I set voltage with the fixed value?
If not, is there any way to do that?

FYI, i'm using intel i7-core(nehalem) and ubuntu 10.10.
FYI2, i found out i can do using IA32_PERF_CTL register, but there's no
detail from intel.
FYI3, can i change P-state table so that i can only change voltage in P
states?

Thanks,
mihn



             reply	other threads:[~2011-01-27  9:10 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-27  9:10 mihn [this message]
2011-01-27 16:12 ` cpu voltage change question Phillip Susi
2011-01-27 18:31   ` Henrique de Moraes Holschuh
2011-01-27 18:39   ` mihn leigh
2011-01-27 18:47     ` Henrique de Moraes Holschuh
     [not found]     ` <AANLkTim=ZGBU8AD9_ub5gAL8YHn6EDoORsLvMc6M-3aU@mail.gmail.com>
2011-01-28  9:10       ` mihn
2011-01-28 19:46         ` Phillip Susi

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