xref: /openbmc/linux/Documentation/ABI/stable/sysfs-driver-mlxreg-io (revision 2752e344)

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

Date:		June 2018
KernelVersion:	4.19
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	This file shows ASIC health status. The possible values are:
		0 - health failed, 2 - health OK, 3 - ASIC in booting state.

		The files are read only.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
							cpld1_version
							cpld2_version
Date:		June 2018
KernelVersion:	4.19
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	These files show with which CPLD versions have been burned
		on carrier and switch boards.

		The files are read only.

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

Date:		December 2018
KernelVersion:	5.0
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	This file shows the system fans direction:
		forward direction - relevant bit is set 0;
		reversed direction - relevant bit is set 1.

		The files are read only.

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

Date:		November 2018
KernelVersion:	5.0
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:	5.0
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
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	This file allows iio devices selection.

		Attribute select_iio can be written with 0 or with 1. It
		selects which one of iio devices can be accessed.

		The file is read/write.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu1_on
		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu2_on
		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_cycle
		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_down
Date:		June 2018
KernelVersion:	4.19
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	These files allow asserting system power cycling, switching
		power supply units on and off and system's main power domain
		shutdown.
		Expected behavior:
		When pwr_cycle is written 1: auxiliary power domain will go
		down and after short period (about 1 second) up.
		When  psu1_on or psu2_on is written 1, related unit will be
		disconnected from the power source, when written 0 - connected.
		If both are written 1 - power supplies main power domain will
		go down.
		When pwr_down is written 1, system's main power domain will go
		down.

		The files are write only.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
							reset_aux_pwr_or_ref
							reset_asic_thermal
							reset_hotswap_or_halt
							reset_hotswap_or_wd
							reset_fw_reset
							reset_long_pb
							reset_main_pwr_fail
							reset_short_pb
							reset_sw_reset
Date:		June 2018
KernelVersion:	4.19
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	These files show the system reset cause, as following: power
		auxiliary outage or power refresh, ASIC thermal shutdown, halt,
		hotswap, watchdog, firmware reset, long press power button,
		short press power button, software reset. Value 1 in file means
		this is reset cause, 0 - otherwise. Only one of the above
		causes could be 1 at the same time, representing only last
		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:	5.0
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.