aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/hwmon
diff options
context:
space:
mode:
authorTao Ren <rentao.bupt@gmail.com>2019-10-29 11:20:54 -0700
committerGuenter Roeck <linux@roeck-us.net>2019-11-06 14:37:19 -0800
commit61412ef12a8450e0a8e64d9f30eca5fb07d19996 (patch)
treebca2d53f4bce4d0a44a6f2669e244e542e6dd722 /Documentation/hwmon
parenthwmon: (pmbus) add driver for BEL PFE1100 and PFE3000 (diff)
downloadlinux-dev-61412ef12a8450e0a8e64d9f30eca5fb07d19996.tar.xz
linux-dev-61412ef12a8450e0a8e64d9f30eca5fb07d19996.zip
docs: hwmon: Document bel-pfe pmbus driver
Add documentation for bel-pfe pmbus driver which supports BEL PFE1100 and PFE3000 power supplies. Signed-off-by: Tao Ren <rentao.bupt@gmail.com> Link: https://lore.kernel.org/r/20191029182054.32279-3-rentao.bupt@gmail.com [groeck: Added bel-pfe to index.rst] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/bel-pfe.rst112
-rw-r--r--Documentation/hwmon/index.rst1
2 files changed, 113 insertions, 0 deletions
diff --git a/Documentation/hwmon/bel-pfe.rst b/Documentation/hwmon/bel-pfe.rst
new file mode 100644
index 000000000000..4b4a7d67854c
--- /dev/null
+++ b/Documentation/hwmon/bel-pfe.rst
@@ -0,0 +1,112 @@
+Kernel driver bel-pfe
+======================
+
+Supported chips:
+
+ * BEL PFE1100
+
+ Prefixes: 'pfe1100'
+
+ Addresses scanned: -
+
+ Datasheet: https://www.belfuse.com/resources/datasheets/powersolutions/ds-bps-pfe1100-12-054xa.pdf
+
+ * BEL PFE3000
+
+ Prefixes: 'pfe3000'
+
+ Addresses scanned: -
+
+ Datasheet: https://www.belfuse.com/resources/datasheets/powersolutions/ds-bps-pfe3000-series.pdf
+
+Author: Tao Ren <rentao.bupt@gmail.com>
+
+
+Description
+-----------
+
+This driver supports hardware monitoring for below power supply devices
+which support PMBus Protocol:
+
+ * BEL PFE1100
+
+ 1100 Watt AC to DC power-factor-corrected (PFC) power supply.
+ PMBus Communication Manual is not publicly available.
+
+ * BEL PFE3000
+
+ 3000 Watt AC/DC power-factor-corrected (PFC) and DC-DC power supply.
+ PMBus Communication Manual is not publicly available.
+
+The driver is a client driver to the core PMBus driver. Please see
+Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
+
+
+Usage Notes
+-----------
+
+This driver does not auto-detect devices. You will have to instantiate the
+devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
+details.
+
+Example: the following will load the driver for an PFE3000 at address 0x20
+on I2C bus #1::
+
+ $ modprobe bel-pfe
+ $ echo pfe3000 0x20 > /sys/bus/i2c/devices/i2c-1/new_device
+
+
+Platform data support
+---------------------
+
+The driver supports standard PMBus driver platform data.
+
+
+Sysfs entries
+-------------
+
+======================= =======================================================
+curr1_label "iin"
+curr1_input Measured input current
+curr1_max Input current max value
+curr1_max_alarm Input current max alarm
+
+curr[2-3]_label "iout[1-2]"
+curr[2-3]_input Measured output current
+curr[2-3]_max Output current max value
+curr[2-3]_max_alarm Output current max alarm
+
+fan[1-2]_input Fan 1 and 2 speed in RPM
+fan1_target Set fan speed reference for both fans
+
+in1_label "vin"
+in1_input Measured input voltage
+in1_crit Input voltage critical max value
+in1_crit_alarm Input voltage critical max alarm
+in1_lcrit Input voltage critical min value
+in1_lcrit_alarm Input voltage critical min alarm
+in1_max Input voltage max value
+in1_max_alarm Input voltage max alarm
+
+in2_label "vcap"
+in2_input Hold up capacitor voltage
+
+in[3-8]_label "vout[1-3,5-7]"
+in[3-8]_input Measured output voltage
+in[3-4]_alarm vout[1-2] output voltage alarm
+
+power[1-2]_label "pin[1-2]"
+power[1-2]_input Measured input power
+power[1-2]_alarm Input power high alarm
+
+power[3-4]_label "pout[1-2]"
+power[3-4]_input Measured output power
+
+temp[1-3]_input Measured temperature
+temp[1-3]_alarm Temperature alarm
+======================= =======================================================
+
+.. note::
+
+ - curr3, fan2, vout[2-7], vcap, pin2, pout2 and temp3 attributes only
+ exist for PFE3000.
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index dad3bf4ebf63..0daa103d36e6 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -41,6 +41,7 @@ Hardware Monitoring Kernel Drivers
asb100
asc7621
aspeed-pwm-tacho
+ bel-pfe
coretemp
da9052
da9055