Prefix: 'it8603'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
+ * IT8620E
+ Prefix: 'it8620'
+ Addresses scanned: from Super I/O config space (8 I/O ports)
+ * IT8622E
+ Prefix: 'it8622'
+ Addresses scanned: from Super I/O config space (8 I/O ports)
+ Datasheet: Not publicly available
+ * IT8628E
+ Prefix: 'it8628'
+ Addresses scanned: from Super I/O config space (8 I/O ports)
+ Datasheet: Not publicly available
* IT8705F
Prefix: 'it87'
Addresses scanned: from Super I/O config space (8 I/O ports)
Prefix: 'it8728'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
+ * IT8732F
+ Prefix: 'it8732'
+ Addresses scanned: from Super I/O config space (8 I/O ports)
+ Datasheet: Not publicly available
* IT8771E
Prefix: 'it8771'
Addresses scanned: from Super I/O config space (8 I/O ports)
Prefix: 'it8786'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
+ * IT8790E
+ Prefix: 'it8790'
+ 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)
Description
-----------
-This driver implements support for the IT8603E, IT8623E, IT8705F, IT8712F,
-IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E, IT8771E,
-IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, and SiS950 chips.
+This driver implements support for the IT8603E, IT8620E, IT8622E, IT8623E,
+IT8628E, IT8705F, IT8712F, IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F,
+IT8732F, IT8758E, IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E,
+IT8790E, and SiS950 chips.
These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
joysticks and other miscellaneous stuff. For hardware monitoring, they
have support for 2 additional fans. The additional fans are supported by the
driver.
-The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8781F, IT8782F, IT8783E/F,
-and late IT8712F and IT8705F also have optional 16-bit tachometer counters
-for fans 1 to 3. This is better (no more fan clock divider mess) but not
-compatible with the older chips and revisions. The 16-bit tachometer mode
+The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8732F, IT8781F, IT8782F,
+IT8783E/F, and late IT8712F and IT8705F also have optional 16-bit tachometer
+counters for fans 1 to 3. This is better (no more fan clock divider mess) but
+not compatible with the older chips and revisions. The 16-bit tachometer mode
is enabled by the driver when one of the above chips is detected.
The IT8726F is just bit enhanced IT8716F with additional hardware
until a datasheet becomes available (hopefully.)
The IT8603E/IT8623E is a custom design, hardware monitoring part is similar to
-IT8728F. It only supports 16-bit fan mode, the full speed mode of the
-fan is not supported (value 0 of pwmX_enable).
+IT8728F. It only supports 3 fans, 16-bit fan mode, and the full speed mode
+of the fan is not supported (value 0 of pwmX_enable).
+
+The IT8620E and IT8628E are custom designs, hardware monitoring part is similar
+to IT8728F. It only supports 16-bit fan mode. Both chips support up to 6 fans.
+
+The IT8790E supports up to 3 fans. 16-bit fan mode is always enabled.
+
+The IT8732F supports a closed-loop mode for fan control, but this is not
+currently implemented by the driver.
Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed.
Voltage sensors (also known as IN sensors) report their values in volts. An
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 IT8603E, IT8721F/IT8758E and IT8728F: 0.012 volt.) The
-battery voltage in8 does not have limit registers.
-
-On the IT8603E, IT8721F/IT8758E, IT8781F, IT8782F, and IT8783E/F, some
-voltage inputs are internal and scaled inside the chip:
+zero'; this is important for negative voltage measurements. On most chips, all
+voltage inputs can measure voltages between 0 and 4.08 volts, with a resolution
+of 0.016 volt. IT8603E, IT8721F/IT8758E and IT8728F can measure between 0 and
+3.06 volts, with a resolution of 0.012 volt. IT8732F can measure between 0 and
+2.8 volts with a resolution of 0.0109 volt. The battery voltage in8 does not
+have limit registers.
+
+On the IT8603E, IT8620E, IT8628E, IT8721F/IT8758E, IT8732F, IT8781F, IT8782F,
+and IT8783E/F, some voltage inputs are internal and scaled inside the chip:
* in3 (optional)
* in7 (optional for IT8781F, IT8782F, and IT8783E/F)
* in8 (always)
If a temperature sensor is configured for thermistors, the attribute values
are ignored. If the thermal sensor type is Intel PECI, the temperature offset
must be programmed to the critical CPU temperature.
+
+Preliminary support
+-------------------
+
+Support for IT8607E, IT8665E, and IT8686E is preliminary. Voltage readings,
+temperature readings, fan control, and fan speed measurements may be wrong
+and/or missing. Fan control and fan speed may be enabled and reported for
+non-existing fans. Please report any problems and inconsistencies.
+
+Reporting information for unsupported chips
+-------------------------------------------
+
+If the chip in your system is not yet supported by the driver, please provide
+the following information.
+
+First, run sensors-detect. It will tell you something like
+
+ Probing for Super-I/O at 0x2e/0x2f
+ ...
+ Trying family `ITE'... Yes
+ Found unknown chip with ID 0x8665
+ (logical device 4 has address 0x290, could be sensors)
+
+With this information, run the following commands.
+
+sudo isadump -k 0x87,0x01,0x55,0x55 0x2e 0x2f 7
+sudo isadump 0x295 0x296
+
+and report the results.
+
+The addresses in the first command are from "Probing for Super-I/O at
+0x2e/0x2f". Use those addresses in the first command.
+ sudo isadump -k 0x87,0x01,0x55,0x55 0x2e 0x2f 7
+
+The addresses in the second command are from "has address 0x290".
+Add 5 and 6 to this address for the next command.
+ sudo isadump 0x295 0x296
+
+Next, force-install the driver by providing one of the already supported chips
+as forced ID. Useful IDs to test are 0x8622, 0x8628, 0x8728, and 0x8732, though
+feel free to test more IDs. For each ID, instantiate the driver as follows
+(this example is instantiating driver with ID 0x8622).
+ sudo modprobe it87 force_id=0x8622
+After entering this command, run the "sensors" command and provide the output.
+Then unload the driver with
+ sudo modprobe -r it87
+Repeat with different chip IDs, and report each result.
+
+Please also report your board type as well as voltages and fan settings from
+the BIOS. If possible, connect fans to different fan headers and let us know
+if all fans are detected and reported.
+
+This information _might_ give us enough information to add experimental support
+for the chip in question. No guarantees, though - unless a datasheet is
+available, something is likely to be wrong.
projects / groeck-it87 / blobdiff