Documentation/hwmon/it87.rst

10     Addresses scanned: from Super I/O config space (8 I/O ports)
18     Addresses scanned: from Super I/O config space (8 I/O ports)
24     Addresses scanned: from Super I/O config space (8 I/O ports)
32     Addresses scanned: from Super I/O config space (8 I/O ports)
40     Addresses scanned: from Super I/O config space (8 I/O ports)
48     Addresses scanned: from Super I/O config space (8 I/O ports)
56     Addresses scanned: from Super I/O config space (8 I/O ports)
64     Addresses scanned: from Super I/O config space (8 I/O ports)
72     Addresses scanned: from Super I/O config space (8 I/O ports)
80     Addresses scanned: from Super I/O config space (8 I/O ports)
88     Addresses scanned: from Super I/O config space (8 I/O ports)
96     Addresses scanned: from Super I/O config space (8 I/O ports)
104     Addresses scanned: from Super I/O config space (8 I/O ports)
112     Addresses scanned: from Super I/O config space (8 I/O ports)
120     Addresses scanned: from Super I/O config space (8 I/O ports)
128     Addresses scanned: from Super I/O config space (8 I/O ports)
136     Addresses scanned: from Super I/O config space (8 I/O ports)
144     Addresses scanned: from Super I/O config space (8 I/O ports)
152     Addresses scanned: from Super I/O config space (8 I/O ports)
160     Addresses scanned: from Super I/O config space (8 I/O ports)
164   * SiS950   [clone of IT8705F]
168     Addresses scanned: from Super I/O config space (8 I/O ports)
174     - Christophe Gauthron
175     - Jean Delvare <jdelvare@suse.de>
179 -----------------
192     misconfigured by BIOS - PWM values would be inverted. This option tries
198   For example "force_id=0x8689,0x8633".  A value of 0 is ignored
201   all chips, to only set the first chip use "force_id=0x8689,0".
208   set to 1.
209   Provided since there are reports that system-wide acpi_enfore_resources=lax
217 -------------------
219 All the chips supported by this driver are LPC Super-I/O chips, accessed
220 through the LPC bus (ISA-like I/O ports). The IT8712F additionally has an
223 than the ISA access, and was only available on a small number of
228 -----------
235 These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
242 the Vcore voltage of the processor. The early IT8712F have 5 VID pins,
247 is stored in the Super-I/O configuration space. Due to technical limitations,
258 IT8783E/F, and late IT8712F and IT8705F also have optional 16-bit tachometer
260 not compatible with the older chips and revisions. The 16-bit tachometer mode
261 is enabled by the driver when one of the above chips is detected.
271 IT8728F. It only supports 3 fans, 16-bit fan mode, and the full speed mode
272 of the fan is not supported (value 0 of pwmX_enable).
275 to IT8728F. It only supports 16-bit fan mode. Both chips support up to 6 fans.
277 The IT8790E, IT8792E/IT8795E and IT87952E support up to 3 fans. 16-bit fan
280 The IT8732F supports a closed-loop mode for fan control, but this is not
288 16-bit tachometer counters aren't used, fan readings can be divided by
290 accuracy. With a divider of 2, the lowest representable value is around
299 of 0.016 volt.  IT8603E, IT8721F/IT8758E and IT8728F can measure between 0 and
300 3.06 volts, with a resolution of 0.012 volt.  IT8732F can measure between 0 and
301 2.8 volts with a resolution of 0.0109 volt.  The battery voltage in8 does not
310 The driver handles this transparently so user-space doesn't have to care.
321 once-only alarms.
323 Out-of-limit readings can also result in beeping, if the chip is properly
338 -----------------
349 read-only.
353 -------------------------------------------
360 The PWM output of trip point 4 is always the maximum value (fan running
361 at full speed) while the PWM output of the other 3 trip points can be
362 freely chosen. The temperature of all 4 trip points can be freely chosen.
369 the one of trip point N. The automatic control mode is less flexible
373 Trip points must be set properly before switching to automatic fan speed
379 -----------------------------
381 The driver supports temp[1-3]_offset sysfs attributes to adjust the reported
382 temperature for thermal diodes or diode-connected thermal transistors.