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diff --git a/Documentation/hwmon/stef48h28.rst b/Documentation/hwmon/stef48h28.rst new file mode 100644 index 000000000000..63d75e9affd8 --- /dev/null +++ b/Documentation/hwmon/stef48h28.rst @@ -0,0 +1,71 @@ +.. 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. +====================== ======================================================== |