Re: Sensors on Asus P2B-F?

[Paul Goyette <paul%whooppee.com@localhost>]

Well, the device that you have is not behaving as a good chip should!

It does occassionally return a "valid" value when we retrieve the 
device's configuration register, but not consistently.  (Sometimes we 
get a good 'cr = 1', sometimes we get bad 'cr = 69').  But the device 
doesn't report a valid vendor ID (0x6f6f is neither Winbond nor ASUS).

It does report a potentially-valid chip ID 0x88, but that is only valid 
if vendor ID is ASUS.

I have just fixed the piixpm code to set the bus type field.  This will 
enable the I2C_SCAN code to actually work.  Can you grab rev 1.30 of
src/sys/dev/pci/piixpm.c and rebuild and try again?

I really doubt that what you have on this motherboard is a real lm chip, 
based on its strange behavior.


On Tue, 3 Nov 2009, Hauke Fath wrote:

> At 10:39 Uhr -0800 02.11.2009, Paul Goyette wrote:
> > >  The resulting kernel is very chatty, but has
> > >
> > >  Nov  2 18:54:42 Riffel /netbsd: iic0 at piixpm0: I2C bus
> >
> > Hmmm.  If you applied I2C_SCAN, I would have expected to see another line 
> > similar to
> >
> > iic0: devices at 0x2e 0x50 0x51
>
> That kernel was built with options {LMDEBUG,I2C_SCAN}, but without DEBUG.
>
> Adding DEBUG to the config indeed results in
>
> [...]
> piixpm0: 24-bit timer
> piixpm0: interrupting at SMI, polling
> iic0 at piixpm0: I2C bus
> lm_probe: rv = 0, cr = 69
> [...]
>
>         hauke
>
> --
>     The ASCII Ribbon Campaign                    Hauke Fath
> ()     No HTML/RTF in email            Institut für Nachrichtentechnik
> /\     No Word docs in email                     TU Darmstadt
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