Commit 52675da1 authored by Vadim Pasternak's avatar Vadim Pasternak Committed by Darren Hart (VMware)
Browse files

Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces 



Add documentation for the new attributes for systems of type MQM87xx,
MSN34xx, MSN37xx. It includes the attributes related to ComEx resets,
system platform reset, JTAG interface enabling, additional CPLD device.
All the above system are equipped with ComEX board, have JTAG selector
and extra CPLD.

Signed-off-by: default avatarVadim Pasternak <vadimp@mellanox.com>
[dvhart: Change kernel version from 5.0 to 4.21 until we know for sure]
Signed-off-by: default avatarDarren Hart (VMware) <dvhart@infradead.org>
parent e2883859

Documentation/ABI/stable/sysfs-driver-mlxreg-io

+40 −1
Original line number Diff line number Diff line
@@ -12,7 +12,6 @@ Description: This file shows ASIC health status. The possible values are: 
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/

							cpld1_version

							cpld2_version



Date:		June 2018

KernelVersion:	4.19

Contact:	Vadim Pasternak <vadimpmellanox.com>
@@ -21,6 +20,28 @@ Description: These files show with which CPLD versions have been burned 


		The files are read only.



What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/

							cpld3_version



Date:		November 2018

KernelVersion:	4.21

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	These files show with which CPLD versions have been burned

		on LED board.



		The files are read only.



What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/

							jtag_enable



Date:		November 2018

KernelVersion:	4.21

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	These files enable and disable the access to the JTAG domain.

		By default access to the JTAG domain is disabled.



		The file is read/write.



What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/select_iio

Date:		June 2018

KernelVersion:	4.19
@@ -76,3 +97,21 @@ Description: These files show the system reset cause, as following: power 
		reset cause.



		The files are read only.



What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/

						reset_comex_pwr_fail

						reset_from_comex

						reset_system

						reset_voltmon_upgrade_fail



Date:		November 2018

KernelVersion:	4.21

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	These files show the system reset cause, as following: ComEx

		power fail, reset from ComEx, system platform reset, reset

		due to voltage monitor devices upgrade failure,

		Value 1 in file means this is reset cause, 0 - otherwise.

		Only one bit could be 1 at the same time, representing only

		the last reset cause.



		The files are read only.

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