summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@g5.osdl.org>2006-02-07 16:29:27 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-07 16:29:27 -0800
commitb4669d66fb1488fd9cebe0b8da447cfeb86109ba (patch)
tree2beaba0e7d8acac9703667aff5f9bc9f4d4357d6 /Documentation
parentb43d4ddaec2b33fd6eaf0bed970c86ab08a52aaf (diff)
parentc5e3fbf22ccba0879b174fab7ec0e322b1266c2c (diff)
downloadlinux-3.10-b4669d66fb1488fd9cebe0b8da447cfeb86109ba.tar.gz
linux-3.10-b4669d66fb1488fd9cebe0b8da447cfeb86109ba.tar.bz2
linux-3.10-b4669d66fb1488fd9cebe0b8da447cfeb86109ba.zip
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/i2c-2.6
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/feature-removal-schedule.txt9
-rw-r--r--Documentation/hwmon/f71805f105
-rw-r--r--Documentation/hwmon/it872
-rw-r--r--Documentation/hwmon/sysfs-interface18
-rw-r--r--Documentation/i2c/busses/i2c-sis96x (renamed from Documentation/i2c/busses/i2c-sis69x)4
5 files changed, 134 insertions, 4 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 4d4897c8ef9..b730d765b52 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -162,3 +162,12 @@ What: pci_module_init(driver)
When: January 2007
Why: Is replaced by pci_register_driver(pci_driver).
Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de>
+
+---------------------------
+
+What: I2C interface of the it87 driver
+When: January 2007
+Why: The ISA interface is faster and should be always available. The I2C
+ probing is also known to cause trouble in at least one case (see
+ bug #5889.)
+Who: Jean Delvare <khali@linux-fr.org>
diff --git a/Documentation/hwmon/f71805f b/Documentation/hwmon/f71805f
new file mode 100644
index 00000000000..28c5b7d1eb9
--- /dev/null
+++ b/Documentation/hwmon/f71805f
@@ -0,0 +1,105 @@
+Kernel driver f71805f
+=====================
+
+Supported chips:
+ * Fintek F71805F/FG
+ Prefix: 'f71805f'
+ Addresses scanned: none, address read from Super I/O config space
+ Datasheet: Provided by Fintek on request
+
+Author: Jean Delvare <khali@linux-fr.org>
+
+Thanks to Denis Kieft from Barracuda Networks for the donation of a
+test system (custom Jetway K8M8MS motherboard, with CPU and RAM) and
+for providing initial documentation.
+
+Thanks to Kris Chen from Fintek for answering technical questions and
+providing additional documentation.
+
+Thanks to Chris Lin from Jetway for providing wiring schematics and
+anwsering technical questions.
+
+
+Description
+-----------
+
+The Fintek F71805F/FG Super I/O chip includes complete hardware monitoring
+capabilities. It can monitor up to 9 voltages (counting its own power
+source), 3 fans and 3 temperature sensors.
+
+This chip also has fan controlling features, using either DC or PWM, in
+three different modes (one manual, two automatic). The driver doesn't
+support these features yet.
+
+The driver assumes that no more than one chip is present, which seems
+reasonable.
+
+
+Voltage Monitoring
+------------------
+
+Voltages are sampled by an 8-bit ADC with a LSB of 8 mV. The supported
+range is thus from 0 to 2.040 V. Voltage values outside of this range
+need external resistors. An exception is in0, which is used to monitor
+the chip's own power source (+3.3V), and is divided internally by a
+factor 2.
+
+The two LSB of the voltage limit registers are not used (always 0), so
+you can only set the limits in steps of 32 mV (before scaling).
+
+The wirings and resistor values suggested by Fintek are as follow:
+
+ pin expected
+ name use R1 R2 divider raw val.
+
+in0 VCC VCC3.3V int. int. 2.00 1.65 V
+in1 VIN1 VTT1.2V 10K - 1.00 1.20 V
+in2 VIN2 VRAM 100K 100K 2.00 ~1.25 V (1)
+in3 VIN3 VCHIPSET 47K 100K 1.47 2.24 V (2)
+in4 VIN4 VCC5V 200K 47K 5.25 0.95 V
+in5 VIN5 +12V 200K 20K 11.00 1.05 V
+in6 VIN6 VCC1.5V 10K - 1.00 1.50 V
+in7 VIN7 VCORE 10K - 1.00 ~1.40 V (1)
+in8 VIN8 VSB5V 200K 47K 1.00 0.95 V
+
+(1) Depends on your hardware setup.
+(2) Obviously not correct, swapping R1 and R2 would make more sense.
+
+These values can be used as hints at best, as motherboard manufacturers
+are free to use a completely different setup. As a matter of fact, the
+Jetway K8M8MS uses a significantly different setup. You will have to
+find out documentation about your own motherboard, and edit sensors.conf
+accordingly.
+
+Each voltage measured has associated low and high limits, each of which
+triggers an alarm when crossed.
+
+
+Fan Monitoring
+--------------
+
+Fan rotation speeds are reported as 12-bit values from a gated clock
+signal. Speeds down to 366 RPM can be measured. There is no theoretical
+high limit, but values over 6000 RPM seem to cause problem. The effective
+resolution is much lower than you would expect, the step between different
+register values being 10 rather than 1.
+
+The chip assumes 2 pulse-per-revolution fans.
+
+An alarm is triggered if the rotation speed drops below a programmable
+limit or is too low to be measured.
+
+
+Temperature Monitoring
+----------------------
+
+Temperatures are reported in degrees Celsius. Each temperature measured
+has a high limit, those crossing triggers an alarm. There is an associated
+hysteresis value, below which the temperature has to drop before the
+alarm is cleared.
+
+All temperature channels are external, there is no embedded temperature
+sensor. Each channel can be used for connecting either a thermal diode
+or a thermistor. The driver reports the currently selected mode, but
+doesn't allow changing it. In theory, the BIOS should have configured
+everything properly.
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87
index 7f42e441c64..9555be1ed99 100644
--- a/Documentation/hwmon/it87
+++ b/Documentation/hwmon/it87
@@ -9,7 +9,7 @@ Supported chips:
http://www.ite.com.tw/
* IT8712F
Prefix: 'it8712'
- Addresses scanned: I2C 0x28 - 0x2f
+ Addresses scanned: I2C 0x2d
from Super I/O config space (8 I/O ports)
Datasheet: Publicly available at the ITE website
http://www.ite.com.tw/
diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index 764cdc5480e..a0d0ab24288 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -179,11 +179,12 @@ temp[1-*]_auto_point[1-*]_temp_hyst
****************
temp[1-3]_type Sensor type selection.
- Integers 1, 2, 3 or thermistor Beta value (3435)
+ Integers 1 to 4 or thermistor Beta value (typically 3435)
Read/Write.
1: PII/Celeron Diode
2: 3904 transistor
3: thermal diode
+ 4: thermistor (default/unknown Beta)
Not all types are supported by all chips
temp[1-4]_max Temperature max value.
@@ -261,6 +262,21 @@ alarms Alarm bitmask.
of individual bits.
Bits are defined in kernel/include/sensors.h.
+alarms_in Alarm bitmask relative to in (voltage) channels
+ Read only
+ A '1' bit means an alarm, LSB corresponds to in0 and so on
+ Prefered to 'alarms' for newer chips
+
+alarms_fan Alarm bitmask relative to fan channels
+ Read only
+ A '1' bit means an alarm, LSB corresponds to fan1 and so on
+ Prefered to 'alarms' for newer chips
+
+alarms_temp Alarm bitmask relative to temp (temperature) channels
+ Read only
+ A '1' bit means an alarm, LSB corresponds to temp1 and so on
+ Prefered to 'alarms' for newer chips
+
beep_enable Beep/interrupt enable
0 to disable.
1 to enable.
diff --git a/Documentation/i2c/busses/i2c-sis69x b/Documentation/i2c/busses/i2c-sis96x
index b88953dfd58..00a009b977e 100644
--- a/Documentation/i2c/busses/i2c-sis69x
+++ b/Documentation/i2c/busses/i2c-sis96x
@@ -7,7 +7,7 @@ Supported adapters:
Any combination of these host bridges:
645, 645DX (aka 646), 648, 650, 651, 655, 735, 745, 746
and these south bridges:
- 961, 962, 963(L)
+ 961, 962, 963(L)
Author: Mark M. Hoffman <mhoffman@lightlink.com>
@@ -29,7 +29,7 @@ The command "lspci" as root should produce something like these lines:
or perhaps this...
-00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0645
+00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0645
00:02.0 ISA bridge: Silicon Integrated Systems [SiS]: Unknown device 0961
00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016