diff options
| author | Kevin Lo <kevlo@kevlo.org> | 2007-11-23 09:31:52 +0800 |
|---|---|---|
| committer | Mark M. Hoffman <mhoffman@lightlink.com> | 2008-02-07 20:39:40 -0500 |
| commit | 85f03bccd6e0e2ac6ccf017d4bcd5d74bb87a671 (patch) | |
| tree | 2e71c1f5edbbb9e78237da39f208514656c873a1 /Documentation | |
| parent | ce9c2f449b9e6b68d3a71ba146d64c44c8945d8d (diff) | |
hwmon: Add support for Winbond W83L786NG/NR
Signed-off-by: Kevin Lo <kevlo@kevlo.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/w83l786ng | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/Documentation/hwmon/w83l786ng b/Documentation/hwmon/w83l786ng new file mode 100644 index 00000000000..d8f55d7fff1 --- /dev/null +++ b/Documentation/hwmon/w83l786ng @@ -0,0 +1,54 @@ +Kernel driver w83l786ng +===================== + +Supported chips: + * Winbond W83L786NG/W83L786NR + Prefix: 'w83l786ng' + Addresses scanned: I2C 0x2e - 0x2f + Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf + +Author: Kevin Lo <kevlo@kevlo.org> + + +Module Parameters +----------------- + +* reset boolean + (default 0) + Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default + behavior is no chip reset to preserve BIOS settings + + +Description +----------- + +This driver implements support for Winbond W83L786NG/W83L786NR chips. + +The driver implements two temperature sensors, two fan rotation speed +sensors, and three voltage sensors. + +Temperatures are measured in degrees Celsius and measurement resolution is 1 +degC for temp1 and temp2. + +Fan rotation speeds are reported in RPM (rotations per minute). Fan readings +readings can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64 +or 128 for fan 1/2) to give the readings more range or accuracy. + +Voltage sensors (also known as IN sensors) report their values in millivolts. +An alarm is triggered if the voltage has crossed a programmable minimum +or maximum limit. + +/sys files +---------- + +pwm[1-2] - this file stores PWM duty cycle or DC value (fan speed) in range: + 0 (stop) to 255 (full) +pwm[1-2]_enable - this file controls mode of fan/temperature control: + * 0 Manual Mode + * 1 Thermal Cruise + * 2 Smart Fan II + * 4 FAN_SET +pwm[1-2]_mode - Select PWM of DC mode + * 0 DC + * 1 PWM +tolerance[1-2] - Value in degrees of Celsius (degC) for +- T |