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 Kernel driver pmbus 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 How to instantiate I2C devices 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.