# lm_sensors configuration file for the Gigabyte K8V Ultra-939 motherboard
# 2005-08-28, Jean Delvare <khali@linux-fr.org>
# Thanks to Rudolf Marek and Grant Coady for their help.
# Comments welcome!

chip "it87-*" "it8705-*"

### Voltages

   # Gigabyte seems to follow the recommended wirings, except for the
   # battery. It always reads 0.00V so I think they wired the pin to the
   # analog ground. The IT8705F application note recommends not to
   # leave unused voltage inputs floating, but Gigabyte seemingly did
   # so for in5, in6 and in7 and most probably in3.

   label  in0  "Vcore"
   label  in1  "Vram"    # "DDR25V" in BIOS
   label  in2  "+3.3V"
   ignore in3            # Left floating?
   label  in4  "+12V"
   ignore in5            # Left floating
   ignore in6            # Left floating
   ignore in7            # Left floating
   label  in8  "Ground"  # Not in BIOS
   ignore vid

   # Vcore, Vram, +3.3V and Ground are connected directly, so no compute
   # line is needed for these. For +12V, Gigabyte refused to confirm
   # the resistor values. The BIOS provided a hint, but it is most
   # certainly bogus, as the formula doesn't make physical sense.

   # In fact, the default formula seems to work just well. Measurements
   # suggest a 4.03 ratio, as opposed to 4.00 with default resistor
   # values. This fits within the margins assuming 1% precision
   # resistors. The tool provided by Gigabyte, "Easy Tune 5", seems to
   # use a ratio of 4.06, which is also within the margins.

   # From ITE's "IT8705F application circuit"
   compute  in4  @ * ((30/10)+1), @ / ((30/10)+1)
   # From BIOS
   # compute  in4  @ * 32500 / 8200 + 0.3, (@ - 0.3) * 8200 / 32500
   # From Easy Tune 5
   # compute  in4  @ * 4.06, @ / 4.06

   # The BIOS won't set any limit for voltages.

   # I have an Athlon 64 3200+, those Vcore can vary from 1.1 to 1.4 V
   # depending on current frequency.
   set in0_min 1.1 * 0.95
   set in0_max 1.4 * 1.05

   set in1_min 2.5 * 0.95
   set in1_max 2.5 * 1.05
   set in2_min 3.3 * 0.95
   set in2_max 3.3 * 1.05
   # set in3_min 5   * 0.95
   # set in3_max 5   * 1.05
   set in4_min 12  * 0.95
   set in4_max 12  * 1.05

### Temperatures

   # Gigabyte confirmed that there is no system temperature sensor on this
   # motherboard. This is really disappointing, as the board is otherwise
   # full featured.

   ignore temp1
   ignore temp2
   label  temp3  "CPU Temp"

   set sensor1 0
   set sensor2 0

   # The CPU temperature was seen from 34 to 48 degrees C so far.
   set temp3_low  10
   set temp3_over 51

### Fans

   # My CPU is a box version, coming with a thermoregulated fan spinning
   # between 3000 and 4500 RPM. My case comes with a 12 cm fan spinning
   # at around 1600 RPM.

   label  fan1  "CPU Fan"
   label  fan2  "Case Fan"
   label  fan3  "PSU Fan"
   ignore fan3

   # Default is fan clock divider of 8 for all fans. We can improve
   # the readings by using lower ones.

   set fan1_div 2
   set fan2_div 4
   # set fan3_div 8

   # You can ask the BIOS to set the limits. It'll set them both to 664 RPM,
   # which is definitely too low, but at least it should tell you if any
   # fan plain stops. Unfortunately I couldn't test this because my case has
   # no speaker.

   set fan1_min 2600
   set fan2_min 1300