Commit 64824861 authored by Charles Hsu's avatar Charles Hsu Committed by Guenter Roeck
Browse files

hwmon: pmbus: add support for STEF48H28 



Add support for STEF48H28 hot-swap controller.

Signed-off-by: default avatarCharles Hsu <hsu.yungteng@gmail.com>
Link: https://lore.kernel.org/r/20260126063712.1049025-2-hsu.yungteng@gmail.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 418a1828

Documentation/hwmon/index.rst

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@@ -234,6 +234,7 @@ Hardware Monitoring Kernel Drivers 
   shtc1

   sis5595

   sl28cpld

   stef48h28

   smpro-hwmon

   smsc47b397

   smsc47m192

Documentation/hwmon/stef48h28.rst

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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.

=========================================================

MAINTAINERS

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@@ -24710,6 +24710,13 @@ S: Maintained 
F:	Documentation/devicetree/bindings/power/supply/st,stc3117.yaml

F:	drivers/power/supply/stc3117_fuel_gauge.c









ST STEF48H28 DRIVER









M:	Charles Hsu	<hsu.yungteng@gmail.com>









L:	linux-hwmon@vger.kernel.org









S:	Maintained









F:	Documentation/hwmon/stef48h28.rst









F:	drivers/hwmon/pmbus/stef48h28.c

















ST STM32 FIREWALL









M:	Gatien Chevallier <gatien.chevallier@foss.st.com>









S:	Maintained

























drivers/hwmon/pmbus/Kconfig



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@@ -585,6 +585,15 @@ config SENSORS_Q54SJ108A2







	  This driver can also be built as a module. If so, the module will









	  be called q54sj108a2.



















config SENSORS_STEF48H28









	tristate "ST STEF48H28"









	help









	  If you say yes here you get hardware monitoring support for ST









	  STEF48H28.



















	  This driver can also be built as a module. If so, the module will









	  be called stef48h28.



















config SENSORS_STPDDC60









	tristate "ST STPDDC60"









	help
































drivers/hwmon/pmbus/Makefile



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@@ -57,6 +57,7 @@ obj-$(CONFIG_SENSORS_PLI1209BC)	+= pli1209bc.o







obj-$(CONFIG_SENSORS_PM6764TR)	+= pm6764tr.o









obj-$(CONFIG_SENSORS_PXE1610)	+= pxe1610.o









obj-$(CONFIG_SENSORS_Q54SJ108A2)	+= q54sj108a2.o









obj-$(CONFIG_SENSORS_STEF48H28)	+= stef48h28.o









obj-$(CONFIG_SENSORS_STPDDC60)	+= stpddc60.o









obj-$(CONFIG_SENSORS_TDA38640)	+= tda38640.o









obj-$(CONFIG_SENSORS_TPS25990)	+= tps25990.o