Kernel driver adp1050

Supported chips:

• Analog Devices ADP1050

  Prefix: ‘adp1050’

  Addresses scanned: I2C 0x70 - 0x77

  Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1050.pdf

• Analog Devices ADP1051

  Prefix: ‘adp1051’

  Addresses scanned: I2C 0x70 - 0x77

  Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1051.pdf

• Analog Devices ADP1055

  Prefix: ‘adp1055’

  Addresses scanned: I2C 0x4B - 0x77

  Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADP1055.pdf

• Analog Devices LTP8800-1A/-2/-4A

  Prefix: ‘ltp8800’

  Addresses scanned: -

  Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-1A.pdf

  https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-2.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/LTP8800-4A.pdf

Authors:

• Radu Sabau <radu.sabau@analog.com>

Description

This driver supports hardware monitoring for Analog Devices ADP1050, ADP1051, and ADP1055 Digital Controller for Isolated Power Supply with PMBus interface, and the LTP8800 step-down μModule regulators.

The ADP1050, ADP1051, and ADP1055 are advanced digital controllers with PMBus™ interface targeting high density, high efficiency dc-to-dc power conversion used to monitor system temperatures, voltages and currents. The LTP8800 is a family of step-down μModule regulators that provides microprocessor core voltage from 54V power distribution architecture. Through the PMBus interface, the device can monitor input/output voltages, input current and temperature.

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.

Platform data support

The driver supports standard PMBus driver platform data.

Sysfs Attributes

in1_label	“vin”
in1_input	Measured input voltage
in1_alarm	Input voltage alarm
in1_crit	Critical maximum input voltage
in1_crit_alarm	Input voltage high alarm
in1_lcrit	Critical minimum input voltage
in1_lcrit_alarm	Input voltage critical low alarm
in2_label	“vout1”
in2_input	Measured output voltage
in2_crit	Critical maximum output voltage
in2_crit_alarm	Output voltage high alarm
in2_lcrit	Critical minimum output voltage
in2_lcrit_alarm	Output voltage critical low alarm
in2_max	Critical maximum output voltage
in2_max_alarm	Output voltage critical max alarm
in2_min	Critical minimum output voltage
in2_min_alarm	Output voltage critical min alarm
curr1_label	“iin”
curr1_input	Measured input current.
curr1_alarm	Input current alarm
curr1_crit	Critical maximum input current
curr1_crit_alarm	Input current high alarm
curr2_label	“iout1”
curr2_input	Measured output current
curr2_alarm	Output current alarm
curr2_crit	Critical maximum output current
curr2_crit_alarm	Output current high alarm
curr2_lcrit	Critical minimum output current
curr2_lcrit_alarm	Output current critical low alarm
curr2_max	Critical maximum output current
curr2_max_alarm	Output current critical max alarm
power1_label	“pout1”
power1_input	Measured output power
power1_crit	Critical maximum output power
power1_crit_alarm	Output power high alarm
temp1_input	Measured temperature
temp1_crit	Critical high temperature
temp1_crit_alarm	Chip temperature critical high alarm
temp1_max	Critical maximum temperature
temp1_max_alarm	Temperature critical max alarm
temp2_input	Measured temperature
temp2_crit	Critical high temperature
temp2_crit_alarm	Chip temperature critical high alarm
temp2_max	Critical maximum temperature
temp2_max_alarm	Temperature critical max alarm