w83l786ng.rst 1.6 KB

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  1. Kernel driver w83l786ng
  2. =======================
  3. Supported chips:
  4. * Winbond W83L786NG/W83L786NR
  5. Prefix: 'w83l786ng'
  6. Addresses scanned: I2C 0x2e - 0x2f
  7. Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf
  8. Author: Kevin Lo <kevlo@kevlo.org>
  9. Module Parameters
  10. -----------------
  11. * reset boolean
  12. (default 0)
  13. Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default
  14. behavior is no chip reset to preserve BIOS settings
  15. Description
  16. -----------
  17. This driver implements support for Winbond W83L786NG/W83L786NR chips.
  18. The driver implements two temperature sensors, two fan rotation speed
  19. sensors, and three voltage sensors.
  20. Temperatures are measured in degrees Celsius and measurement resolution is 1
  21. degC for temp1 and temp2.
  22. Fan rotation speeds are reported in RPM (rotations per minute). Fan readings
  23. can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64
  24. or 128 for fan 1/2) to give the readings more range or accuracy.
  25. Voltage sensors (also known as IN sensors) report their values in millivolts.
  26. An alarm is triggered if the voltage has crossed a programmable minimum
  27. or maximum limit.
  28. /sys files
  29. ----------
  30. pwm[1-2]
  31. - this file stores PWM duty cycle or DC value (fan speed) in range:
  32. 0 (stop) to 255 (full)
  33. pwm[1-2]_enable
  34. - this file controls mode of fan/temperature control:
  35. * 0 Manual Mode
  36. * 1 Thermal Cruise
  37. * 2 Smart Fan II
  38. * 4 FAN_SET
  39. pwm[1-2]_mode
  40. - Select PWM of DC mode
  41. * 0 DC
  42. * 1 PWM
  43. tolerance[1-2]
  44. - Value in degrees of Celsius (degC) for +- T