What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/ asic_health Date: June 2018 KernelVersion: 4.19 Contact: Vadim Pasternak 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 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 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 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*/cpld4_version Date: November 2018 KernelVersion: 5.0 Contact: Vadim Pasternak 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 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 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 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 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 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.