Re: [PATCH] hwmon: (coretemp) Document Atom E660 support

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On Wed, 28 Sep 2011 19:27:37 +0530, R, Durgadoss wrote:
> Hi Jean,
> 
> > -----Original Message-----
> > From: Jean Delvare [mailto:khali@xxxxxxxxxxxx]
> > Sent: Wednesday, September 28, 2011 7:20 PM
> > To: R, Durgadoss
> > Cc: LM Sensors; Yu, Fenghua; Alexander Stein
> > Subject: Re:  [PATCH] hwmon: (coretemp) Document Atom E660 support
> > 
> > On Wed, 28 Sep 2011 18:54:58 +0530, R, Durgadoss wrote:
> > > Yes. It's the same for all Medfield based Atom products.
> > > And it cannot be read from MSR_TEMPERATURE_TARGET.
> > > So, we have to add the model name in the driver.
> > > Currently I have added a OR inside the 'if' in adjust_tjmax Function.
> > >
> > > if (c->x86_model == 0x1c || c->x86_model == 0x27) {
> > >
> > > This fetches me 90 and I have confirmed it with the Hardware folks here..
> > 
> > Oh, BTW, there is magic in this block to adjust tjmax based on the
> > north bridge. Is there any such magic possible for Atom model 0x26?
> 
> I guess this is not needed now, since we know the tjmax is 90 for 0x26.

Not always. As discussed earlier, the E660T has TjMax = 110°C. If this
was the only exception, it's documented now so we'd me mostly fine. But
apparently all "T" variants of the Atom E6x0 have TjMax = 110°C. It
would be really nice to have a way to set tjmax = 110000 in the driver
for them, even if this is only a heuristic.

-- 
Jean Delvare

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