Lines Matching +full:system +full:- +full:on +full:- +full:a +full:- +full:chip
174 - Christophe Gauthron
175 - Jean Delvare <jdelvare@suse.de>
179 -----------------
182 0 if vbat should report power on value, 1 if vbat should be updated after
183 each read. Default is 0. On some boards the battery voltage is provided
185 at power on will be the actual battery voltage (which the chip does
186 automatically). On other boards the battery voltage is always fed to
187 the chip so can be read at any time. Excessive reading may decrease
192 misconfigured by BIOS - PWM values would be inverted. This option tries
197 Force multiple chip ID to specified value, separated by ','.
198 For example "force_id=0x8689,0x8633". A value of 0 is ignored
199 for that chip.
200 Note: A single force_id value (e.g. "force_id=0x8689") is used for
201 all chips, to only set the first chip use "force_id=0x8689,0".
209 Provided since there are reports that system-wide acpi_enfore_resources=lax
210 can result in boot failures on some systems.
212 may access the chip at the same time. This can result in race conditions and,
213 worst case, result in unexpected system reboots.
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 -----------
244 though, so the functionality may not be available on a given system.
247 is stored in the Super-I/O configuration space. Due to technical limitations,
251 can't have both on a given board.
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
264 for AMD power sequencing. Therefore the chip will appear as IT8716F
268 until a datasheet becomes available (hopefully.)
270 The IT8603E/IT8623E is a custom design, hardware monitoring part is similar to
271 IT8728F. It only supports 3 fans, 16-bit fan mode, and the full speed mode
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
287 triggered if the rotation speed has dropped below a programmable limit. When
288 16-bit tachometer counters aren't used, fan readings can be divided by
289 a programmable divider (1, 2, 4 or 8) to give the readings more range or
290 accuracy. With a divider of 2, the lowest representable value is around
295 alarm is triggered if the voltage has crossed a programmable minimum or
297 zero'; this is important for negative voltage measurements. On most chips, all
298 voltage inputs can measure voltages between 0 and 4.08 volts, with a resolution
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
304 On the IT8603E, IT8620E, IT8628E, IT8721F/IT8758E, IT8732F, IT8781F, IT8782F,
305 and IT8783E/F, some voltage inputs are internal and scaled inside the chip:
310 The driver handles this transparently so user-space doesn't have to care.
314 the mainboard and/or processor itself. It is a value in volts.
321 once-only alarms.
323 Out-of-limit readings can also result in beeping, if the chip is properly
330 To change sensor N to a thermistor, 'echo 4 > tempN_type' where N is 1, 2,
331 or 3. To change sensor N to a thermal diode, 'echo 3 > tempN_type'.
338 -----------------
346 try lowering the PWM base frequency (pwm1_freq). Depending on the fan,
347 it may give you a somewhat greater control range. The same frequency is
349 read-only.
353 -------------------------------------------
364 prevent fast switching between fan on and off.
366 The chip automatically computes the PWM output value based on the input
367 temperature, based on this simple rule: if the temperature value is
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.
383 If a temperature sensor is configured for thermistors, the attribute values