Commit 1b2ca93c authored by Cosmo Chou's avatar Cosmo Chou Committed by Guenter Roeck
Browse files

hwmon: Add driver for Astera Labs PT5161L retimer 

This driver implements support for temperature monitoring of Astera Labs
PT5161L series PCIe retimer chips.

This driver implementation originates from the CSDK available at
Link: https://github.com/facebook/openbmc/tree/helium/common/recipes-lib/retimer-v2.14


The communication protocol utilized is based on the I2C/SMBus standard.

Signed-off-by: default avatarCosmo Chou <chou.cosmo@gmail.com>
Link: https://lore.kernel.org/r/20240206125420.3884300-2-chou.cosmo@gmail.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 1a793caf

Documentation/hwmon/index.rst

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@@ -190,6 +190,7 @@ Hardware Monitoring Kernel Drivers 
   pmbus

   powerz

   powr1220

   pt5161l

   pxe1610

   pwm-fan

   q54sj108a2

Documentation/hwmon/pt5161l.rst

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.. SPDX-License-Identifier: GPL-2.0-or-later



Kernel driver pt5161l

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



Supported chips:



  * Astera Labs PT5161L



    Prefix: 'pt5161l'



    Addresses scanned: I2C 0x20 - 0x27



    Datasheet: Not publicly available.



Authors: Cosmo Chou <cosmo.chou@quantatw.com>



Description

-----------



This driver implements support for temperature monitoring of Astera Labs

PT5161L series PCIe retimer chips.



This driver implementation originates from the CSDK available at

https://github.com/facebook/openbmc/tree/helium/common/recipes-lib/retimer-v2.14

The communication protocol utilized is based on the I2C/SMBus standard.



Sysfs entries

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



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

temp1_input      Measured temperature (in millidegrees Celsius)

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



Debugfs entries

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



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

fw_load_status   Firmware load status

fw_ver           Firmware version of the retimer

heartbeat_status Heartbeat status

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

MAINTAINERS

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@@ -17698,6 +17698,13 @@ F: fs/pstore/ 
F:	include/linux/pstore*

K:	\b(pstore|ramoops)









PT5161L HARDWARE MONITOR DRIVER









M:	Cosmo Chou <cosmo.chou@quantatw.com>









L:	linux-hwmon@vger.kernel.org









S:	Maintained









F:	Documentation/hwmon/pt5161l.rst









F:	drivers/hwmon/pt5161l.c

















PTP HARDWARE CLOCK SUPPORT









M:	Richard Cochran <richardcochran@gmail.com>









L:	netdev@vger.kernel.org

























drivers/hwmon/Kconfig



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@@ -1755,6 +1755,16 @@ source "drivers/hwmon/peci/Kconfig"

















source "drivers/hwmon/pmbus/Kconfig"



















config SENSORS_PT5161L









	tristate "Astera Labs PT5161L PCIe retimer hardware monitoring"









	depends on I2C









	help









	  If you say yes here you get support for temperature monitoring









	  on the Astera Labs PT5161L PCIe retimer.



















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









	  will be called pt5161l.



















config SENSORS_PWM_FAN









	tristate "PWM fan"









	depends on (PWM && OF) || COMPILE_TEST
































drivers/hwmon/Makefile



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@@ -184,6 +184,7 @@ obj-$(CONFIG_SENSORS_PC87427)	+= pc87427.o







obj-$(CONFIG_SENSORS_PCF8591)	+= pcf8591.o









obj-$(CONFIG_SENSORS_POWERZ)	+= powerz.o









obj-$(CONFIG_SENSORS_POWR1220)  += powr1220.o









obj-$(CONFIG_SENSORS_PT5161L)	+= pt5161l.o









obj-$(CONFIG_SENSORS_PWM_FAN)	+= pwm-fan.o









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









obj-$(CONFIG_SENSORS_SBTSI)	+= sbtsi_temp.o