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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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