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Documentation/hwmon: add Delta E50SN12051 documentation

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Document the hardware monitoring support for the Delta E50SN12051
device.

The documentation describes the supported sensors exposed via the
hwmon subsystem, including voltage, current, and temperature measurements.

Signed-off-by: Colin Huang <u8813345@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260508-add-e50sn12051-v5-2-abebdcc29665@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Colin Huang 2026-05-08 17:44:29 +08:00 committed by Guenter Roeck
parent 7232b794bf
commit c41bc86778
2 changed files with 82 additions and 0 deletions
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81
Documentation/hwmon/e50sn12051.rst Normal file
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.. SPDX-License-Identifier: GPL-2.0-or-later
Kernel driver e50sn12051
========================
Supported chips:
* Delta E50SN12051
Prefix: 'e50sn12051'
Addresses scanned: -
Datasheet:
Provided by Delta upon request and NDA
Description
-----------
E50SN12051 is a 600W non-isolated 1/8th brick DC-DC power module.
This driver supports the E50SN12051 PMBus compliant monitor device.
The device provides measurements for:
* Input voltage
* Output current
* Output voltage
* Temperature
The driver is based on the PMBus core and exposes standard hwmon
sysfs attributes.
Sysfs attributes
----------------
======================= =======================================================
curr1_label "iout1"
curr1_crit Critical maximum current.
From IOUT_OC_FAULT_LIMIT register.
curr1_crit_alarm Current critical high alarm.
From IOUT_OC_FAULT status.
curr1_input Measured current.
From READ_IOUT register.
curr1_max Maximum current.
From IOUT_OC_WARN_LIMIT register.
curr1_max_alarm Current high alarm.
From IOUT_OC_WARN_LIMIT status.
in1_label "vin"
in1_alarm Input voltage alarm.
in1_input Measured voltage.
From READ_VIN register.
in2_label "vout1"
in2_crit Critical maximum voltage.
From VOUT_OV_FAULT_LIMIT register.
in2_crit_alarm Voltage critical high alarm.
From VOLTAGE_OV_FAULT status.
in2_input Measured voltage.
From READ_VOUT register.
in2_max Maximum voltage.
From VOUT_OV_WARN_LIMIT register.
in2_max_alarm Voltage high alarm.
From VOLTAGE_OV_WARNING status.
temp1_crit Critical high temperature.
From OT_FAULT_LIMIT register.
temp1_crit_alarm Module temperature critical high alarm.
Set by comparing READ_TEMPERATURE_1 with OT_FAULT_LIMIT
if TEMP_OT_FAULT status is set.
temp1_input Measured module's hot spot temperature.
From READ_TEMPERATURE_1 register.
temp1_max Maximum temperature.
From OT_WARN_LIMIT register.
temp1_max_alarm Module temperature high alarm.
Set by comparing READ_TEMPERATURE_1 with OT_WARN_LIMIT if
TEMP_OT_WARNING status is set.
======================= =======================================================

1
Documentation/hwmon/index.rst
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@ -68,6 +68,7 @@ Hardware Monitoring Kernel Drivers
drivetemp
ds1621
ds620
e50sn12051
emc1403
emc2103
emc2305