diff options
Diffstat (limited to 'Documentation/hwmon/it87')
-rw-r--r-- | Documentation/hwmon/it87 | 20 |
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 | ||
73 | This driver implements support for the IT8705F, IT8712F, IT8716F, | 77 | This driver implements support for the IT8705F, IT8712F, IT8716F, |
74 | IT8718F, IT8726F and SiS950 chips. | 78 | IT8718F, IT8720F, IT8726F and SiS950 chips. |
75 | 79 | ||
76 | These chips are 'Super I/O chips', supporting floppy disks, infrared ports, | 80 | These chips are 'Super I/O chips', supporting floppy disks, infrared ports, |
77 | joysticks and other miscellaneous stuff. For hardware monitoring, they | 81 | joysticks 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 | |||
84 | though, so the functionality may not be available on a given system. | 88 | though, so the functionality may not be available on a given system. |
85 | The driver dumbly assume it is there. | 89 | The driver dumbly assume it is there. |
86 | 90 | ||
87 | The IT8718F also features VID inputs (up to 8 pins) but the value is | 91 | The IT8718F and IT8720F also features VID inputs (up to 8 pins) but the value |
88 | stored in the Super-I/O configuration space. Due to technical limitations, | 92 | is stored in the Super-I/O configuration space. Due to technical limitations, |
89 | this value can currently only be read once at initialization time, so | 93 | this value can currently only be read once at initialization time, so |
90 | the driver won't notice and report changes in the VID value. The two | 94 | the driver won't notice and report changes in the VID value. The two |
91 | upper VID bits share their pins with voltage inputs (in5 and in6) so you | 95 | upper VID bits share their pins with voltage inputs (in5 and in6) so you |
92 | can't have both on a given board. | 96 | can't have both on a given board. |
93 | 97 | ||
94 | The IT8716F, IT8718F and later IT8712F revisions have support for | 98 | The IT8716F, IT8718F, IT8720F and later IT8712F revisions have support for |
95 | 2 additional fans. The additional fans are supported by the driver. | 99 | 2 additional fans. The additional fans are supported by the driver. |
96 | 100 | ||
97 | The IT8716F and IT8718F, and late IT8712F and IT8705F also have optional | 101 | The IT8716F, IT8718F and IT8720F, and late IT8712F and IT8705F also have |
98 | 16-bit tachometer counters for fans 1 to 3. This is better (no more fan | 102 | optional 16-bit tachometer counters for fans 1 to 3. This is better (no more |
99 | clock divider mess) but not compatible with the older chips and | 103 | fan clock divider mess) but not compatible with the older chips and |
100 | revisions. The 16-bit tachometer mode is enabled by the driver when one | 104 | revisions. The 16-bit tachometer mode is enabled by the driver when one |
101 | of the above chips is detected. | 105 | of the above chips is detected. |
102 | 106 | ||
@@ -122,7 +126,7 @@ zero'; this is important for negative voltage measurements. All voltage | |||
122 | inputs can measure voltages between 0 and 4.08 volts, with a resolution of | 126 | inputs can measure voltages between 0 and 4.08 volts, with a resolution of |
123 | 0.016 volt. The battery voltage in8 does not have limit registers. | 127 | 0.016 volt. The battery voltage in8 does not have limit registers. |
124 | 128 | ||
125 | The VID lines (IT8712F/IT8716F/IT8718F) encode the core voltage value: | 129 | The VID lines (IT8712F/IT8716F/IT8718F/IT8720F) encode the core voltage value: |
126 | the voltage level your processor should work with. This is hardcoded by | 130 | the voltage level your processor should work with. This is hardcoded by |
127 | the mainboard and/or processor itself. It is a value in volts. | 131 | the mainboard and/or processor itself. It is a value in volts. |
128 | 132 | ||