Re: A new Athlon 'bug'.

From: Dave Jones (davej@codemonkey.org.uk)
Date: Fri Nov 29 2002 - 10:11:45 EST

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On Fri, Nov 29, 2002 at 04:08:32PM +0100, Daniel Nofftz wrote:

> maybe somone remembers that i hacked a little bit with the power saving
> modes of the athlon processor. so far as i know, the clk_ctl register is
> importand when the athlon processor comes back from acpi-c2 mode. in c2 he
> is disconnected from the system bus and the internal clock is clocked
> down. in some cases a false value in this register could prevent the
> athlon processor to come back from c2 -> lockup of the machine or
> something like it ...

Correct. It contains values that indicate to the CPU how to ramp up
the CPU clock during low-power modes.

Dave

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs
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