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-rw-r--r--Documentation/hwmon/it8720
1 files changed, 12 insertions, 8 deletions
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87
index 042c0415140b..659315d98e00 100644
--- a/Documentation/hwmon/it87
+++ b/Documentation/hwmon/it87
@@ -26,6 +26,10 @@ Supported chips:
26 Datasheet: Publicly available at the ITE website 26 Datasheet: Publicly available at the ITE website
27 http://www.ite.com.tw/product_info/file/pc/IT8718F_V0.2.zip 27 http://www.ite.com.tw/product_info/file/pc/IT8718F_V0.2.zip
28 http://www.ite.com.tw/product_info/file/pc/IT8718F_V0%203_(for%20C%20version).zip 28 http://www.ite.com.tw/product_info/file/pc/IT8718F_V0%203_(for%20C%20version).zip
29 * IT8720F
30 Prefix: 'it8720'
31 Addresses scanned: from Super I/O config space (8 I/O ports)
32 Datasheet: Not yet publicly available.
29 * SiS950 [clone of IT8705F] 33 * SiS950 [clone of IT8705F]
30 Prefix: 'it87' 34 Prefix: 'it87'
31 Addresses scanned: from Super I/O config space (8 I/O ports) 35 Addresses scanned: from Super I/O config space (8 I/O ports)
@@ -71,7 +75,7 @@ Description
71----------- 75-----------
72 76
73This driver implements support for the IT8705F, IT8712F, IT8716F, 77This driver implements support for the IT8705F, IT8712F, IT8716F,
74IT8718F, IT8726F and SiS950 chips. 78IT8718F, IT8720F, IT8726F and SiS950 chips.
75 79
76These chips are 'Super I/O chips', supporting floppy disks, infrared ports, 80These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
77joysticks and other miscellaneous stuff. For hardware monitoring, they 81joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -84,19 +88,19 @@ the IT8716F and late IT8712F have 6. They are shared with other functions
84though, so the functionality may not be available on a given system. 88though, so the functionality may not be available on a given system.
85The driver dumbly assume it is there. 89The driver dumbly assume it is there.
86 90
87The IT8718F also features VID inputs (up to 8 pins) but the value is 91The IT8718F and IT8720F also features VID inputs (up to 8 pins) but the value
88stored in the Super-I/O configuration space. Due to technical limitations, 92is stored in the Super-I/O configuration space. Due to technical limitations,
89this value can currently only be read once at initialization time, so 93this value can currently only be read once at initialization time, so
90the driver won't notice and report changes in the VID value. The two 94the driver won't notice and report changes in the VID value. The two
91upper VID bits share their pins with voltage inputs (in5 and in6) so you 95upper VID bits share their pins with voltage inputs (in5 and in6) so you
92can't have both on a given board. 96can't have both on a given board.
93 97
94The IT8716F, IT8718F and later IT8712F revisions have support for 98The IT8716F, IT8718F, IT8720F and later IT8712F revisions have support for
952 additional fans. The additional fans are supported by the driver. 992 additional fans. The additional fans are supported by the driver.
96 100
97The IT8716F and IT8718F, and late IT8712F and IT8705F also have optional 101The IT8716F, IT8718F and IT8720F, and late IT8712F and IT8705F also have
9816-bit tachometer counters for fans 1 to 3. This is better (no more fan 102optional 16-bit tachometer counters for fans 1 to 3. This is better (no more
99clock divider mess) but not compatible with the older chips and 103fan clock divider mess) but not compatible with the older chips and
100revisions. The 16-bit tachometer mode is enabled by the driver when one 104revisions. The 16-bit tachometer mode is enabled by the driver when one
101of the above chips is detected. 105of the above chips is detected.
102 106
@@ -122,7 +126,7 @@ zero'; this is important for negative voltage measurements. All voltage
122inputs can measure voltages between 0 and 4.08 volts, with a resolution of 126inputs can measure voltages between 0 and 4.08 volts, with a resolution of
1230.016 volt. The battery voltage in8 does not have limit registers. 1270.016 volt. The battery voltage in8 does not have limit registers.
124 128
125The VID lines (IT8712F/IT8716F/IT8718F) encode the core voltage value: 129The VID lines (IT8712F/IT8716F/IT8718F/IT8720F) encode the core voltage value:
126the voltage level your processor should work with. This is hardcoded by 130the voltage level your processor should work with. This is hardcoded by
127the mainboard and/or processor itself. It is a value in volts. 131the mainboard and/or processor itself. It is a value in volts.
128 132