On Wed, 10 Oct 2012 11:13:19 -0700, Guenter Roeck wrote: > On Wed, Oct 10, 2012 at 07:00:39AM -0700, Guenter Roeck wrote: > > On Wed, Oct 10, 2012 at 03:44:56PM +0200, Jean Delvare wrote: > > [ ... ] > > > > > > Documentation/hwmon/coretemp says 125°C for Atom 230 and 330. N5xx > > > aren't listed in this document BTW. > > > > > Reminds me ... we have a discrepancy in the code regarding the 230, and use 100 > > degrees C instead of 125 for it. Any idea where this is documented ? The 125°C TjMax for the Atom 230 was documented by Chen Gong in f3cffe4d (August 2010.) > > I wasn't > > able to find definite numbers over the weekend, and I don't recall why I used > > 100 for the 230 when I introduced tjmax_table. I think we simply never bothered special-casing the Atom 230/330. I suppose they can't be detected by CPUID so we would need string name matching. > Followup on this after some more digging. Datasheets actually claim Tjmax for > both 230 and 330 to be 90 degrees C. 125 degrees C is the shutdown temperature, > which is different (the N4xx/D4xx/D5xx also have a shutdown temperature of 125 > degrees C). We do know that we have to use Tjmax of 125 C for the 330 for somewhat > reasonable temperature readings. So the big remaining question is which > temperature is used as calibration point for the 230. I don't know, sorry. My parents do have an Atom 230-based system though, I can take a look next time I visit them if you want. -- Jean Delvare -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
