xref: /openbmc/linux/Documentation/ABI/stable/sysfs-driver-mlxreg-io (revision 435d7e10)

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
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/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*/cpld3_version
Date:		November 2018
KernelVersion:	5.0
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	These files show with which CPLD versions have been burned
		on LED or Gearbox 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
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_asic_thermal
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_hotswap_or_halt
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_hotswap_or_wd
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_fw_reset
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_long_pb
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_main_pwr_fail
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_short_pb
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/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
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_comex
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_system
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/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.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld4_version
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*/reset_comex_thermal
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_comex_wd
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_from_asic
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_reload_bios
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sff_wd
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_swb_wd
Date:		June 2019
KernelVersion:	5.3
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	These files show the system reset cause, as following:
		COMEX thermal shutdown; wathchdog power off or reset was derived
		by one of the next components: COMEX, switch board or by Small Form
		Factor mezzanine, reset requested from ASIC, reset cuased by BIOS
		reload. 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*/config1
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/config2
Date:		January 2020
KernelVersion:	5.6
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	These files show system static topology identification
		like system's static I2C topology, number and type of FPGA
		devices within the system and so on.

		The files are read only.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_ac_pwr_fail
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_platform
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_soc
What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/reset_sw_pwr_off
Date:		January 2020
KernelVersion:	5.6
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	These files show the system reset causes, as following: reset
		due to AC power failure, reset invoked from software by
		assertion reset signal through CPLD. reset caused by signal
		asserted by SOC through ACPI register, reset invoked from
		software by assertion power off signal through CPLD.

		The files are read only.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pcie_asic_reset_dis
Date:		January 2020
KernelVersion:	5.6
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	This file allows to retain ASIC up during PCIe root complex
		reset, when attribute is set 1.

		The file is read/write.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/vpd_wp
Date:		January 2020
KernelVersion:	5.6
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	This file allows to overwrite system VPD hardware wrtie
		protection when attribute is set 1.

		The file is read/write.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/voltreg_update_status
Date:		January 2020
KernelVersion:	5.6
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	This file exposes the configuration update status of burnable
		voltage regulator devices. The status values are as following:
		0 - OK; 1 - CRC failure; 2 = I2C failure; 3 - in progress.

		The file is read only.

What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/ufm_version
Date:		January 2020
KernelVersion:	5.6
Contact:	Vadim Pasternak <vadimpmellanox.com>
Description:	This file exposes the firmware version of burnable voltage
		regulator devices.

		The file is read only.