Re: [lm-sensors] Intel 5500 temperature

Re: [lm-sensors] Intel 5500 temperature

[Jean Delvare]

Hi Karl,

Jumping in 3 years later...

On Sun, 20 Sep 2009 21:36:24 -0500, Karl Schmidt wrote:
> I'm working on a Tyan S7002. It has an Intel 5500 (AKA tylersburg) chip on it with heatsink that 
> runs hot. Digging into the details reveals that it throttles back if it gets too hot -
> 
> http://www.intel.com/assets/pdf/designguide/321330.pdf  -- see pg 18.
> 
> Is it possible to read the temperature of this chip?
> 
> I've attached some readouts..
> 
> 
> More information at pg 159 of http://www.intel.com/Assets/PDF/datasheet/321328.pdf

I have the same chipset on my Asus Z8NA-D6 board and decided to look
into this. There seems to be a thermal sensor in this chipset and
following Intel's documentation I wrote a driver for it. You can
download it at:
  http://khali.linux-fr.org/devel/misc/i5500_temp/
Generic installation instructions are available at:
  http://khali.linux-fr.org/devel/misc/INSTALL

Unfortunately it turns out the driver doesn't work for me. It returns a
constant temperature of 36.5°C. I've tested on a few other systems at
work, with the same disappointing result. I have read the datasheet
again but can't find what I got wrong, if anything.

I'm still sharing my work, in case it works on other systems, or
someone looking at my code can figure out what I missed.

-- 
Jean Delvare
http://khali.linux-fr.org/wishlist.html

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Re: [lm-sensors] Intel 5500 temperature

[Guenter Roeck]

On Sat, Oct 06, 2012 at 01:12:53PM +0200, Jean Delvare wrote:
> Hi Karl,
> 
> Jumping in 3 years later...
> 
> On Sun, 20 Sep 2009 21:36:24 -0500, Karl Schmidt wrote:
> > I'm working on a Tyan S7002. It has an Intel 5500 (AKA tylersburg) chip on it with heatsink that 
> > runs hot. Digging into the details reveals that it throttles back if it gets too hot -
> > 
> > http://www.intel.com/assets/pdf/designguide/321330.pdf  -- see pg 18.
> > 
> > Is it possible to read the temperature of this chip?
> > 
> > I've attached some readouts..
> > 
> > 
> > More information at pg 159 of http://www.intel.com/Assets/PDF/datasheet/321328.pdf
> 
> I have the same chipset on my Asus Z8NA-D6 board and decided to look
> into this. There seems to be a thermal sensor in this chipset and
> following Intel's documentation I wrote a driver for it. You can
> download it at:
>   http://khali.linux-fr.org/devel/misc/i5500_temp/
> Generic installation instructions are available at:
>   http://khali.linux-fr.org/devel/misc/INSTALL
> 
> Unfortunately it turns out the driver doesn't work for me. It returns a
> constant temperature of 36.5°C. I've tested on a few other systems at
> work, with the same disappointing result. I have read the datasheet
> again but can't find what I got wrong, if anything.
> 
> I'm still sharing my work, in case it works on other systems, or
> someone looking at my code can figure out what I missed.
> 
Nothing obvious afaics. Do you get reasonable values for the limits ?

Guenter

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Re: [lm-sensors] Intel 5500 temperature

[Jean Delvare]

On Sat, 6 Oct 2012 09:43:39 -0700, Guenter Roeck wrote:
> On Sat, Oct 06, 2012 at 01:12:53PM +0200, Jean Delvare wrote:
> > I have the same chipset on my Asus Z8NA-D6 board and decided to look
> > into this. There seems to be a thermal sensor in this chipset and
> > following Intel's documentation I wrote a driver for it. You can
> > download it at:
> >   http://khali.linux-fr.org/devel/misc/i5500_temp/
> > Generic installation instructions are available at:
> >   http://khali.linux-fr.org/devel/misc/INSTALL
> > 
> > Unfortunately it turns out the driver doesn't work for me. It returns a
> > constant temperature of 36.5°C. I've tested on a few other systems at
> > work, with the same disappointing result. I have read the datasheet
> > again but can't find what I got wrong, if anything.
> > 
> > I'm still sharing my work, in case it works on other systems, or
> > someone looking at my code can figure out what I missed.
>
> Nothing obvious afaics. Do you get reasonable values for the limits ?

Yes, I get the default limit values mentioned in the datasheet:

intel5500-pci-00a3
Adapter: PCI adapter
temp1:        +36.5°C  (high = +100.0°C, hyst = +90.0°C)
                       (crit = +110.0°C)

-- 
Jean Delvare

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