Commit 007e433c authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: Add driver for Texas Instruments TMP464 and TMP468 



Add support for Texas Instruments TMP464 and TMP468 temperature sensor
ICs.

TI's TMP464 is an I2C temperature sensor chip. This chip is similar
to TI's TMP421 chip, but with 16bit-wide registers (instead of
8bit-wide registers). The chip has one local sensor and four remote
sensors. TMP468 is similar to TMP464 but has one local and eight
remote sensors.

Originally-from: Agathe Porte <agathe.porte@nokia.com>
Cc: Agathe Porte <agathe.porte@nokia.com>
Cc: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Tested-by: default avatarAgathe Porte <agathe.porte@nokia.com>
Link: https://lore.kernel.org/r/20220222223610.23098-2-linux@roeck-us.net


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent b4fa042e

Documentation/hwmon/index.rst

+1 −0
Original line number Diff line number Diff line
@@ -195,6 +195,7 @@ Hardware Monitoring Kernel Drivers 
   tmp108

   tmp401

   tmp421

   tmp464

   tmp513

   tps23861

   tps40422

Documentation/hwmon/tmp464.rst

0 → 100644
+73 −0
Original line number Diff line number Diff line 
.. SPDX-License-Identifier: GPL-2.0



Kernel driver tmp464

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



Supported chips:



  * Texas Instruments TMP464



    Prefix: 'tmp464'



    Addresses scanned: I2C 0x48, 0x49, 0x4a and 0x4b



    Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp464.html



  * Texas Instruments TMP468



    Prefix: 'tmp468'



    Addresses scanned: I2C 0x48, 0x49, 0x4a and 0x4b



    Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp468.html



Authors:



	Agathe Porte <agathe.porte@nokia.com>

	Guenter Roeck <linux@roeck-us.net>



Description

-----------



This driver implements support for Texas Instruments TMP464 and TMP468

temperature sensor chips. TMP464 provides one local and four remote

sensors. TMP468 provides one local and eight remote sensors.

Temperature is measured in degrees Celsius. The chips are wired over

I2C/SMBus and specified over a temperature range of -40 to +125 degrees

Celsius. Resolution for both the local and remote channels is 0.0625

degree C.



The chips support only temperature measurements. The driver exports

temperature values, limits, and alarms via the following sysfs files:



**temp[1-9]_input**



**temp[1-9]_max**



**temp[1-9]_max_hyst**



**temp[1-9]_max_alarm**



**temp[1-9]_crit**



**temp[1-9]_crit_alarm**



**temp[1-9]_crit_hyst**



**temp[2-9]_offset**



**temp[2-9]_fault**



Each sensor can be individually disabled via Devicetree or from sysfs

via:



**temp[1-9]_enable**



If labels were specified in Devicetree, additional sysfs files will

be present:



**temp[1-9]_label**



The update interval is configurable with the following sysfs attribute.



**update_interval**

MAINTAINERS

+2 −0
Original line number Diff line number Diff line
@@ -19502,6 +19502,8 @@ M: Guenter Roeck <linux@roeck-us.net> 
L:	linux-hwmon@vger.kernel.org

S:	Maintained

F:	Documentation/devicetree/bindings/hwmon/ti,tmp464.yaml

F:	Documentation/hwmon/tmp464.rst

F:	drivers/hwmon/tmp464.c









TMP513 HARDWARE MONITOR DRIVER









M:	Eric Tremblay <etremblay@distech-controls.com>

























drivers/hwmon/Kconfig



+11
−0






























Original line number
Diff line number
Diff line







@@ -1996,6 +1996,17 @@ config SENSORS_TMP421







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









	  will be called tmp421.



















config SENSORS_TMP464









	tristate "Texas Instruments TMP464 and compatible"









	depends on I2C









	select REGMAP_I2C









	help









	  If you say yes here you get support for Texas Instruments TMP464









	  and TMP468 temperature sensor chips.



















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









	  will be called tmp464.



















config SENSORS_TMP513









	tristate "Texas Instruments TMP513 and compatibles"









	depends on I2C
































drivers/hwmon/Makefile



+1
−0






























Original line number
Diff line number
Diff line







@@ -195,6 +195,7 @@ obj-$(CONFIG_SENSORS_TMP103)	+= tmp103.o







obj-$(CONFIG_SENSORS_TMP108)	+= tmp108.o









obj-$(CONFIG_SENSORS_TMP401)	+= tmp401.o









obj-$(CONFIG_SENSORS_TMP421)	+= tmp421.o









obj-$(CONFIG_SENSORS_TMP464)	+= tmp464.o









obj-$(CONFIG_SENSORS_TMP513)	+= tmp513.o









obj-$(CONFIG_SENSORS_VEXPRESS)	+= vexpress-hwmon.o









obj-$(CONFIG_SENSORS_VIA_CPUTEMP)+= via-cputemp.o