diff options
| author | Jean Delvare <khali@linux-fr.org> | 2012-01-16 16:51:46 -0500 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2012-01-16 16:51:46 -0500 |
| commit | 409c0b5bdf7d80e61380ce6b226b98405576d7cc (patch) | |
| tree | c9c3f4d9ad0d74203599db8d77768a2676b22812 /Documentation/hwmon | |
| parent | f496b2d4f181fa5fcdf24016b11caaa33eb12477 (diff) | |
hwmon: (lm63) LM64 has a dedicated pin for tachometer
On the LM64, the tachometer function has a dedicated pin and fan speed
monitoring is always enabled.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/lm63 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/hwmon/lm63 b/Documentation/hwmon/lm63 index 8202825cd095..df3e1ae42f39 100644 --- a/Documentation/hwmon/lm63 +++ b/Documentation/hwmon/lm63 | |||
| @@ -54,7 +54,10 @@ value for measuring the speed of the fan. It can measure fan speeds down to | |||
| 54 | Note that the pin used for fan monitoring is shared with an alert out | 54 | Note that the pin used for fan monitoring is shared with an alert out |
| 55 | function. Depending on how the board designer wanted to use the chip, fan | 55 | function. Depending on how the board designer wanted to use the chip, fan |
| 56 | speed monitoring will or will not be possible. The proper chip configuration | 56 | speed monitoring will or will not be possible. The proper chip configuration |
| 57 | is left to the BIOS, and the driver will blindly trust it. | 57 | is left to the BIOS, and the driver will blindly trust it. Only the original |
| 58 | LM63 suffers from this limitation, the LM64 and LM96163 have separate pins | ||
| 59 | for fan monitoring and alert out. On the LM64, monitoring is always enabled; | ||
| 60 | on the LM96163 it can be disabled. | ||
| 58 | 61 | ||
| 59 | A PWM output can be used to control the speed of the fan. The LM63 has two | 62 | A PWM output can be used to control the speed of the fan. The LM63 has two |
| 60 | PWM modes: manual and automatic. Automatic mode is not fully implemented yet | 63 | PWM modes: manual and automatic. Automatic mode is not fully implemented yet |