Re: Unsuported ITE chipset 0x8771

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Tomàs,

On Sun, 26 Feb 2012 16:50:36 +0100, Tomàs Deltell Bonell wrote:
> BIOS shows 4 voltages:
> 
> CPU = 1.368 V

This matches in0 in the output of "sensors".

> 3.3V = 3.33 V

This matches +3.3V.

> 5V = 5.003 V
> 12V = 12.072

With only one sample for each, it's hard to figure out the scaling
factor, which in turn makes it hard to figure out the pin mapping.

I tried gleaning other sample values from screenshots on the web. +12V
could be in2 with a scaling factor of 50/12. +5V could then be in5 with
a scaling factor of 205/120. This is all guesswork of course, I can't
guarantee it is accurate.

If I am right then your configuration file would start as follows:

chip "it8721-* "it8771-*"

### Voltages

   # in1, in4 and in6 all read +2.23V, no idea why.

   label  in0   "Vcore"
   ignore in1
   label  in2   "+12V"
   ignore in4
   label  in5   "+5V"
   ignore in6

   compute  in2  @ * (50/12), @ / (50/12)
   compute  in5  @ * (205/120), @ / (205/120)

   set in0_min   0.7
   set in0_max   1.5
   set in2_min  12   * 0.95
   set in2_max  12   * 1.05
   set in3_min   3.3 * 0.95
   set in3_max   3.3 * 1.05
   set in5_min   5   * 0.95
   set in5_max   5   * 1.95
   set in7_min   3.3 * 0.95
   set in7_max   3.3 * 1.05

I'll let you complete with fans and temperature parts.

Note: as I did the above, I documented all the steps at:
http://www.lm-sensors.org/wiki/VoltageLabelsAndScaling

I hope the article is good enough for public consumption now.

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

_______________________________________________
lm-sensors mailing list
lm-sensors@xxxxxxxxxxxxxx
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors



[Index of Archives]     [Linux Kernel]     [Linux Hardware Monitoring]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]

  Powered by Linux