IT87temp_type issue (ticket 756)

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From: "E. Reijenga [bash bv]" <eltjo at bash.nl>
> DeBeheerder StationeryRE: ticket 756,
> http://www2.lm-sensors.nu/~lm78/readticket.cgi?ticket=756
> 
> Hi,
> 
> I'm experiencing the same problem.
> 
> Is there a solution jet?
> 
>From looking at the ticket the default is
0x2a is 101010 or 101 010, temp sensors 3,1 thermister, 2 diode

modprobe it87 temp_type=0x31

0x31 is 110001 or 110 001, temp sensors 3,2 thermister, 1 diode so this does
change the type of sensor for temperature 1 which is why it stops working.

I think you want 111 000 
modprobe it87 temp_type=0x38

Same as
http://www2.lm-sensors.nu/~lm78/readticket.cgi?ticket=757

>From data sheet
9.5.3.2.28 ADC Temperature Channel Enable Register (Index=51h, Default=00h) 
TMPIN3-1 cannot be enabled in both Thermal Register mode and Thermal Diode (Diode connected Transistor) mode. 
Bit R/W Description 
7-6 R/W Reserved 
5-3 R/W TMPIN3-1 are enabled in Thermal Resistor mode 
2-0 R/W TMPIN3-1 are enabled in Thermal Diode (or Diode-connected Transistor) mode

David Gesswein
http://www.pdp8.net/  -- Run an old computer with blinkenlights



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