sync README with upstream version

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

README

@@ -2,6 +2,10 @@ Kernel driver it87
 ==================
 
 Supported chips:
+  * IT8603E/IT8623E
+    Prefix: 'it8603'
+    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)
@@ -30,6 +34,14 @@ Supported chips:
     Prefix: 'it8728'
     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)
+    Datasheet: Not publicly available
+  * IT8772E
+    Prefix: 'it8772'
+    Addresses scanned: from Super I/O config space (8 I/O ports)
+    Datasheet: Not publicly available
   * IT8781F
     Prefix: 'it8781'
     Addresses scanned: from Super I/O config space (8 I/O ports)
@@ -53,7 +65,7 @@ Supported chips:
 
 Authors:
     Christophe Gauthron
-    Jean Delvare <khali@linux-fr.org>
+    Jean Delvare <jdelvare@suse.de>
 
 
 Module Parameters
@@ -79,7 +91,7 @@ Module Parameters
 Hardware Interfaces
 -------------------
 
-All the chips suported by this driver are LPC Super-I/O chips, accessed
+All the chips supported by this driver are LPC Super-I/O chips, accessed
 through the LPC bus (ISA-like I/O ports). The IT8712F additionally has an
 SMBus interface to the hardware monitoring functions. This driver no
 longer supports this interface though, as it is slower and less reliable
@@ -90,9 +102,9 @@ motherboard models.
 Description
 -----------
 
-This driver implements support for the IT8603E, IT8623E, IT8705F,
-IT8712F, IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E,
-IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, and SiS950 chips.
+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.
 
 These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
 joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -112,22 +124,26 @@ the driver won't notice and report changes in the VID value. The two
 upper VID bits share their pins with voltage inputs (in5 and in6) so you
 can't have both on a given board.
 
-The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8783E/F, and later IT8712F
-revisions have support for 2 additional fans. The additional fans are supported
-by the driver.
+The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E and later IT8712F revisions
+have support for 2 additional fans. The additional fans are supported by the
+driver.
 
-The IT8716F, IT8718F, IT8720F and IT8721F/IT8758E, 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 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
+is enabled by the driver when one of the above chips is detected.
 
 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.)
+The IT8728F, IT8771E, and IT8772E are considered compatible with the IT8721F,
+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).
 
 Temperatures are measured in degrees Celsius. An alarm is triggered once
 when the Overtemperature Shutdown limit is crossed.
@@ -145,12 +161,16 @@ 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 and IT8728F: 0.012 volt.) The battery
-voltage in8 does not have limit registers.
+0.016 volt (except IT8603E, IT8721F/IT8758E and IT8728F: 0.012 volt.) The
+battery voltage in8 does not have limit registers.
 
-On the IT8721F/IT8758E/IT8783E/F, some voltage inputs are internal and scaled
-inside the chip (in7, in8 and optionally in3). The driver handles this
-transparently so user-space doesn't have to care.
+On the IT8603E, IT8721F/IT8758E, 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)
+* in9 (relevant for IT8603E only)
+The driver handles this transparently so user-space doesn't have to care.
 
 The VID lines (IT8712F/IT8716F/IT8718F/IT8720F) encode the core voltage value:
 the voltage level your processor should work with. This is hardcoded by
@@ -216,3 +236,13 @@ doesn't use CPU cycles.
 Trip points must be set properly before switching to automatic fan speed
 control mode. The driver will perform basic integrity checks before
 actually switching to automatic control mode.
+
+
+Temperature offset attributes
+-----------------------------
+
+The driver supports temp[1-3]_offset sysfs attributes to adjust the reported
+temperature for thermal diodes or diode-connected thermal transistors.
+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.