[lm-sensors] Detection of W83L771W/G in lm90

Jean Delvare khali at linux-fr.org
Thu Oct 21 18:26:35 CEST 2010

On Thu, 14 Oct 2010 15:48:18 +0200, Alexander Stein wrote:
> On Thursday 14 October 2010, 15:39:50 Jean Delvare wrote:
> > Yes, I want to ignore it on purpose for simplicity. One reason being
> > that I have a doubt that the old W83L771W/G actually supports a higher
> > refresh rate than the new W83L771AWG/ASG does. I don't necessarily
> > trust the datasheet, as it is inconsistent: it says the default
> > register value is 08h, then later it claims that the default conversion
> > rate is 16 Hz, but 16 Hz corresponds to a value of 09h in the table.
> > Additionally, you'll notice that the W83L771W/G conversion rate table
> > is shifted by 1 compared to all the other compatible chips - which is
> > quite suspicious.
> > 
> > So I assume that the table is wrong in the datasheet. Only if someone
> > with a W83L771W/G at hand tests it and comes to the conclusion that the
> > table in the datasheet is correct, will I update the driver accordingly.
> I surely can test something, but as I'm not into those sensors, I need an 
> advise what and how to test.

Thanks for the proposal, but in all honestly I don't think it's worth
our time, as there's no easy way to test. If someone complains about
the current behavior, I'll investigate, but for now I say we just leave
the code as is.

Jean Delvare

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