diff options
Diffstat (limited to 'Documentation/i2c/chips/smsc47m1')
| -rw-r--r-- | Documentation/i2c/chips/smsc47m1 | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/Documentation/i2c/chips/smsc47m1 b/Documentation/i2c/chips/smsc47m1 deleted file mode 100644 index 34e6478c1425..000000000000 --- a/Documentation/i2c/chips/smsc47m1 +++ /dev/null @@ -1,52 +0,0 @@ -Kernel driver smsc47m1 -====================== - -Supported chips: - * SMSC LPC47B27x, LPC47M10x, LPC47M13x, LPC47M14x, LPC47M15x and LPC47M192 - Addresses scanned: none, address read from Super I/O config space - Prefix: 'smsc47m1' - Datasheets: - http://www.smsc.com/main/datasheets/47b27x.pdf - http://www.smsc.com/main/datasheets/47m10x.pdf - http://www.smsc.com/main/tools/discontinued/47m13x.pdf - http://www.smsc.com/main/datasheets/47m14x.pdf - http://www.smsc.com/main/tools/discontinued/47m15x.pdf - http://www.smsc.com/main/datasheets/47m192.pdf - -Authors: - Mark D. Studebaker <mdsxyz123@yahoo.com>, - With assistance from Bruce Allen <ballen@uwm.edu>, and his - fan.c program: http://www.lsc-group.phys.uwm.edu/%7Eballen/driver/ - Gabriele Gorla <gorlik@yahoo.com>, - Jean Delvare <khali@linux-fr.org> - -Description ------------ - -The Standard Microsystems Corporation (SMSC) 47M1xx Super I/O chips -contain monitoring and PWM control circuitry for two fans. - -The 47M15x and 47M192 chips contain a full 'hardware monitoring block' -in addition to the fan monitoring and control. The hardware monitoring -block is not supported by the driver. - -Fan rotation speeds are reported in RPM (rotations per minute). An alarm is -triggered if the rotation speed has dropped below a programmable limit. Fan -readings can be divided by a programmable divider (1, 2, 4 or 8) to give -the readings more range or accuracy. Not all RPM values can accurately be -represented, so some rounding is done. With a divider of 2, the lowest -representable value is around 2600 RPM. - -PWM values are from 0 to 255. - -If an alarm triggers, it will remain triggered until the hardware register -is read at least once. This means that the cause for the alarm may -already have disappeared! Note that in the current implementation, all -hardware registers are read whenever any data is read (unless it is less -than 1.5 seconds since the last update). This means that you can easily -miss once-only alarms. - - -********************** -The lm_sensors project gratefully acknowledges the support of -Intel in the development of this driver. |