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.. SPDX-License-Identifier: GPL-2.0
Kernel driver stef48h28
=======================
Supported chips:
* Analog Devices STEF48H28
Prefix: 'stef48h28'
Addresses scanned: -
Datasheet: https://www.st.com/resource/en/data_brief/stef48h28.pdf
Author:
- Charles Hsu <hsu.yungteng@gmail.com>
Description
-----------
The STEF48H28 is a 30 A integrated e-fuse for 9-80 V DC power rails.
It provides inrush control, undervoltage/overvoltage lockout and
overcurrent protection using an adaptive (I x t) scheme that permits
short high-current pulses typical of CPU/GPU loads.
The device offers an analog current-monitor output and an on-chip
temperature-monitor signal for system supervision. Startup behavior is
programmable through insertion-delay and soft-start settings.
Additional features include power-good indication, self-diagnostics,
thermal shutdown and a PMBus interface for telemetry and status
reporting.
Platform data support
---------------------
The driver supports standard PMBus driver platform data.
Sysfs entries
-------------
====================== ========================================================
in1_label "vin".
in1_input Measured voltage. From READ_VIN register.
in1_min Minimum Voltage. From VIN_UV_WARN_LIMIT register.
in1_max Maximum voltage. From VIN_OV_WARN_LIMIT register.
in2_label "vout1".
in2_input Measured voltage. From READ_VOUT register.
in2_min Minimum Voltage. From VOUT_UV_WARN_LIMIT register.
in2_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
curr1_label "iin". curr1_input Measured current. From READ_IIN register.
curr2_label "iout1". curr2_input Measured current. From READ_IOUT register.
power1_label "pin"
power1_input Measured input power. From READ_PIN register.
power2_label "pout1"
power2_input Measured output power. From READ_POUT register.
temp1_input Measured temperature. From READ_TEMPERATURE_1 register.
temp1_max Maximum temperature. From OT_WARN_LIMIT register.
temp1_crit Critical high temperature. From OT_FAULT_LIMIT register.
temp2_input Measured temperature. From READ_TEMPERATURE_2 register.
====================== ========================================================
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