From: Dominik Brodowski <linux@brodo.de>
To: textshell@neutronstar.dyndns.org, davej@suse.de
Cc: linux-kernel@vger.kernel.org, Henrik Persson <nix@syndicalist.net>
Subject: Re: 2.6.0-test1: CPUFreq not working, can't find sysfs interface
Date: Tue, 22 Jul 2003 16:23:53 +0200 [thread overview]
Message-ID: <20030722142353.GA1301@brodo.de> (raw)
In-Reply-To: <20030722141839.GD7517@neutronstar.dyndns.org>
On Tue, Jul 22, 2003 at 04:18:39PM +0200, textshell@neutronstar.dyndns.org wrote:
> So it seems to me that the BIOS doesn't have the tables for my Athlon
> model/stepping. I tried to get a new bios from hp, but it didn't change anything
> relevant (they changed something in the PSTs but did not add a new one for my
> processor)
Indeed, that's the BUG().
> > I guess it's yet another BIOS problem... [as seen quite often wrt AMD
> > PowerNow, unfortunately]
>
> I think it would be a good thing to display a Message explaining why powernow
> isn't working to the user in the case that no relevant PST is found.
Patch appended at the end.
> Can you suggest any workaround for this problem, or is my only option to
> complain to HP do supply an updated BIOS.
Well, you could try using the PST which mostly matches your system except
the CPUID [PST #12, see below] -- if the values used are similar to the ones
Windows XP uses. But this might be risky!!!
> I very much would like to have a way to override (or add to) the bios provided
> values.
AFAIK, Dave Jones will add support to override the BIOS-provided tables.
> --DEBUG: 7a0 ?= 781 && 21 ?= 21, 11 ?= 11
> PST:12 (@0x4017d8dc)
> cpuid: 0x781 fsb: 133 maxFID: 0x15 startvid: 0xb
> num of p states in this table: 6
> FID: 0x12 (4.0x [532MHz]) VID: 0x13 (1.200V)
> FID: 0x4 (5.0x [665MHz]) VID: 0x13 (1.200V)
> FID: 0x6 (6.0x [798MHz]) VID: 0x13 (1.200V)
> FID: 0x8 (7.0x [931MHz]) VID: 0x13 (1.200V)
> FID: 0xe (10.0x [1330MHz]) VID: 0xe (1.300V)
> FID: 0x15 (13.5x [1796MHz]) VID: 0xb (1.450V)
Dominik
diff -ruN linux-original/arch/i386/kernel/cpu/cpufreq/powernow-k7.c linux/arch/i386/kernel/cpu/cpufreq/powernow-k7.c
--- linux-original/arch/i386/kernel/cpu/cpufreq/powernow-k7.c 2003-07-11 14:12:35.000000000 +0200
+++ linux/arch/i386/kernel/cpu/cpufreq/powernow-k7.c 2003-07-22 16:16:00.000000000 +0200
@@ -345,6 +345,7 @@
p+=2;
}
}
+ dprintk (KERN_INFO PFX "Did not find any PST table for this CPU -- exiting\n");
return -EINVAL;
}
p++;
next prev parent reply other threads:[~2003-07-22 14:17 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-20 15:02 2.6.0-test1: CPUFreq not working, can't find sysfs interface textshell
2003-07-20 17:45 ` Henrik Persson
2003-07-20 21:12 ` textshell
2003-07-22 12:08 ` Dominik Brodowski
2003-07-22 14:18 ` textshell
2003-07-22 14:23 ` Dominik Brodowski [this message]
2003-07-22 14:42 ` Dave Jones
2003-07-22 14:53 ` textshell
2003-07-23 11:13 ` Pavel Machek
2003-07-23 11:28 ` Richard B. Johnson
2003-07-23 12:30 ` Pavel Machek
2003-07-23 16:36 ` Dominik Brodowski
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