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From: =?ISO-8859-2?Q?Rafa=B3_Bilski?= <rafalbilski@interia.pl>
Subject: Re: VIA C3 'Ezra-T' [C5M] - longhaul - do nothing
Date: Wed, 29 Aug 2007 21:16:29 +0200
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To: "Herbert G. Fischer" <herbert.fischer@gmail.com>
Cc: cpufreq@lists.linux.org.uk

> With scale_voltage=1:
> 
> longhaul: VIA C3 'Ezra-T' [C5M] CPU detected.  Powersaver supported.
> longhaul: Using northbridge support.
> longhaul: MinMult:3.0x MaxMult:7.5x
> longhaul: FSB:133MHz  Lowest speed: 399MHz   Highest speed:399MHz
> longhaul: VRM 8.5
> longhaul: Claims to support voltage scaling but min & max are both 
> 1.250. Voltage scaling disabled
OK. Your processor has RevisionID equal to 1, but it isn't supporting 
voltage scaling.
> [...]
> 
> I also benchmarked with nbench and the changes did not changed processor 
> performance.
> 
> Thanks
Can You check if changing following lines in "do_powersaver" in longhaul.c 
makes any diference?
        /* Setup new frequency */
        longhaul.bits.RevisionKey = longhaul.bits.RevisionID;
Change it to:
        /* Setup new frequency */
        longhaul.bits.RevisionKey = 0;

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