diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/it87 | 13 | ||||
| -rw-r--r-- | Documentation/hwmon/lm63 | 21 | ||||
| -rw-r--r-- | Documentation/hwmon/sysfs-interface | 2 |
3 files changed, 28 insertions, 8 deletions
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87 index 6f496a58673..23b7def21ba 100644 --- a/Documentation/hwmon/it87 +++ b/Documentation/hwmon/it87 @@ -26,6 +26,10 @@ Supported chips: Prefix: 'it8721' Addresses scanned: from Super I/O config space (8 I/O ports) Datasheet: Not publicly available + * IT8728F + Prefix: 'it8728' + Addresses scanned: from Super I/O config space (8 I/O ports) + Datasheet: Not publicly available * SiS950 [clone of IT8705F] Prefix: 'it87' Addresses scanned: from Super I/O config space (8 I/O ports) @@ -71,7 +75,7 @@ Description ----------- This driver implements support for the IT8705F, IT8712F, IT8716F, -IT8718F, IT8720F, IT8721F, IT8726F, IT8758E and SiS950 chips. +IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E and SiS950 chips. These chips are 'Super I/O chips', supporting floppy disks, infrared ports, joysticks and other miscellaneous stuff. For hardware monitoring, they @@ -105,6 +109,9 @@ The IT8726F is just bit enhanced IT8716F with additional hardware for AMD power sequencing. Therefore the chip will appear as IT8716F to userspace applications. +The IT8728F is considered compatible with the IT8721F, until a datasheet +becomes available (hopefully.) + Temperatures are measured in degrees Celsius. An alarm is triggered once when the Overtemperature Shutdown limit is crossed. @@ -121,8 +128,8 @@ alarm is triggered if the voltage has crossed a programmable minimum or maximum limit. Note that minimum in this case always means 'closest to zero'; this is important for negative voltage measurements. All voltage inputs can measure voltages between 0 and 4.08 volts, with a resolution of -0.016 volt (except IT8721F/IT8758E: 0.012 volt.) The battery voltage in8 does -not have limit registers. +0.016 volt (except IT8721F/IT8758E and IT8728F: 0.012 volt.) The battery +voltage in8 does not have limit registers. On the IT8721F/IT8758E, some voltage inputs are internal and scaled inside the chip (in7, in8 and optionally in3). The driver handles this transparently diff --git a/Documentation/hwmon/lm63 b/Documentation/hwmon/lm63 index b9843eab1af..4d30d209881 100644 --- a/Documentation/hwmon/lm63 +++ b/Documentation/hwmon/lm63 @@ -12,6 +12,11 @@ Supported chips: Addresses scanned: I2C 0x18 and 0x4e Datasheet: Publicly available at the National Semiconductor website http://www.national.com/pf/LM/LM64.html + * National Semiconductor LM96163 + Prefix: 'lm96163' + Addresses scanned: I2C 0x4c + Datasheet: Publicly available at the National Semiconductor website + http://www.national.com/pf/LM/LM96163.html Author: Jean Delvare <khali@linux-fr.org> @@ -49,16 +54,24 @@ value for measuring the speed of the fan. It can measure fan speeds down to Note that the pin used for fan monitoring is shared with an alert out function. Depending on how the board designer wanted to use the chip, fan speed monitoring will or will not be possible. The proper chip configuration -is left to the BIOS, and the driver will blindly trust it. +is left to the BIOS, and the driver will blindly trust it. Only the original +LM63 suffers from this limitation, the LM64 and LM96163 have separate pins +for fan monitoring and alert out. On the LM64, monitoring is always enabled; +on the LM96163 it can be disabled. A PWM output can be used to control the speed of the fan. The LM63 has two PWM modes: manual and automatic. Automatic mode is not fully implemented yet (you cannot define your custom PWM/temperature curve), and mode change isn't supported either. -The lm63 driver will not update its values more frequently than every -second; reading them more often will do no harm, but will return 'old' -values. +The lm63 driver will not update its values more frequently than configured with +the update_interval sysfs attribute; reading them more often will do no harm, +but will return 'old' values. Values in the automatic fan control lookup table +(attributes pwm1_auto_*) have their own independent lifetime of 5 seconds. The LM64 is effectively an LM63 with GPIO lines. The driver does not support these GPIO lines at present. + +The LM96163 is an enhanced version of LM63 with improved temperature accuracy +and better PWM resolution. For LM96163, the external temperature sensor type is +configurable as CPU embedded diode(1) or 3904 transistor(2). diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface index a4aa8f600e0..1f4dd855a29 100644 --- a/Documentation/hwmon/sysfs-interface +++ b/Documentation/hwmon/sysfs-interface @@ -304,7 +304,7 @@ value (fastest fan speed) wins. temp[1-*]_type Sensor type selection. Integers 1 to 6 RW - 1: PII/Celeron Diode + 1: CPU embedded diode 2: 3904 transistor 3: thermal diode 4: thermistor |