Commit 443b39c8 authored by Michael Walle's avatar Michael Walle Committed by Guenter Roeck
Browse files

hwmon: add SMARC-sAM67 support 



Add a new driver for the Kontron SMARC-sAM67 board management
controller. It has two voltage sensors and one temperature sensor.

Signed-off-by: default avatarMichael Walle <mwalle@kernel.org>
Link: https://lore.kernel.org/r/20250912120745.2295115-7-mwalle@kernel.org


[groeck: Added sa67 to index.rst]
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 0f6eae86

Documentation/hwmon/index.rst

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@@ -214,6 +214,7 @@ Hardware Monitoring Kernel Drivers 
   q54sj108a2

   qnap-mcu-hwmon

   raspberrypi-hwmon

   sa67

   sbrmi

   sbtsi_temp

   sch5627

Documentation/hwmon/sa67.rst

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.. SPDX-License-Identifier: GPL-2.0-only



Kernel driver sa67mcu

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



Supported chips:



   * Kontron sa67mcu



     Prefix: 'sa67mcu'



     Datasheet: not available



Authors: Michael Walle <mwalle@kernel.org>



Description

-----------



The sa67mcu is a board management controller which also exposes a hardware

monitoring controller.



The controller has two voltage and one temperature sensor. The values are

hold in two 8 bit registers to form one 16 bit value. Reading the lower byte

will also capture the high byte to make the access atomic. The unit of the

volatge sensors are 1mV and the unit of the temperature sensor is 0.1degC.



Sysfs entries

-------------



The following attributes are supported.



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

in0_label		"VDDIN"

in0_input		Measured VDDIN voltage.



in1_label		"VDD_RTC"

in1_input		Measured VDD_RTC voltage.



temp1_input		MCU temperature. Roughly the board temperature.

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

MAINTAINERS

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@@ -23231,6 +23231,7 @@ F: Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml 
F:	Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml

F:	Documentation/devicetree/bindings/watchdog/kontron,sl28cpld-wdt.yaml

F:	drivers/gpio/gpio-sl28cpld.c

F:	drivers/hwmon/sa67mcu-hwmon.c

F:	drivers/hwmon/sl28cpld-hwmon.c

F:	drivers/irqchip/irq-sl28cpld.c

F:	drivers/pwm/pwm-sl28cpld.c

drivers/hwmon/Kconfig

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@@ -1905,6 +1905,16 @@ config SENSORS_RASPBERRYPI_HWMON 
	  This driver can also be built as a module. If so, the module

	  will be called raspberrypi-hwmon.



config SENSORS_SA67MCU

	tristate "Kontron sa67mcu hardware monitoring driver"

	depends on MFD_SL28CPLD || COMPILE_TEST

	help

	  If you say yes here you get support for the voltage and temperature

	  monitor of the sa67 board management controller.



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

	  will be called sa67mcu-hwmon.



config SENSORS_SL28CPLD

	tristate "Kontron sl28cpld hardware monitoring driver"

	depends on MFD_SL28CPLD || COMPILE_TEST

drivers/hwmon/Makefile

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@@ -197,6 +197,7 @@ obj-$(CONFIG_SENSORS_PT5161L) += pt5161l.o 
obj-$(CONFIG_SENSORS_PWM_FAN)	+= pwm-fan.o

obj-$(CONFIG_SENSORS_QNAP_MCU_HWMON)	+= qnap-mcu-hwmon.o

obj-$(CONFIG_SENSORS_RASPBERRYPI_HWMON)	+= raspberrypi-hwmon.o

obj-$(CONFIG_SENSORS_SA67MCU)	+= sa67mcu-hwmon.o

obj-$(CONFIG_SENSORS_SBTSI)	+= sbtsi_temp.o

obj-$(CONFIG_SENSORS_SBRMI)	+= sbrmi.o

obj-$(CONFIG_SENSORS_SCH56XX_COMMON)+= sch56xx-common.o