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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: Vadim Pasternak <vadimp@mellanox.com> [dvhart: Change kernel version from 5.0 to 4.21 until we know for sure] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
117 lines
3.9 KiB
Text
117 lines
3.9 KiB
Text
What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
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asic_health
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Date: June 2018
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KernelVersion: 4.19
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Contact: Vadim Pasternak <vadimpmellanox.com>
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Description: This file shows ASIC health status. The possible values are:
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0 - health failed, 2 - health OK, 3 - ASIC in booting state.
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The files are read only.
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What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
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cpld1_version
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cpld2_version
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Date: June 2018
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KernelVersion: 4.19
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Contact: Vadim Pasternak <vadimpmellanox.com>
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Description: These files show with which CPLD versions have been burned
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on carrier and switch boards.
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The files are read only.
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What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
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cpld3_version
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Date: November 2018
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KernelVersion: 4.21
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Contact: Vadim Pasternak <vadimpmellanox.com>
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Description: These files show with which CPLD versions have been burned
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on LED board.
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The files are read only.
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What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
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jtag_enable
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Date: November 2018
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KernelVersion: 4.21
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Contact: Vadim Pasternak <vadimpmellanox.com>
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Description: These files enable and disable the access to the JTAG domain.
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By default access to the JTAG domain is disabled.
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The file is read/write.
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What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/select_iio
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Date: June 2018
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KernelVersion: 4.19
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Contact: Vadim Pasternak <vadimpmellanox.com>
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Description: This file allows iio devices selection.
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Attribute select_iio can be written with 0 or with 1. It
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selects which one of iio devices can be accessed.
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The file is read/write.
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What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu1_on
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/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/psu2_on
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/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_cycle
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/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/pwr_down
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Date: June 2018
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KernelVersion: 4.19
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Contact: Vadim Pasternak <vadimpmellanox.com>
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Description: These files allow asserting system power cycling, switching
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power supply units on and off and system's main power domain
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shutdown.
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Expected behavior:
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When pwr_cycle is written 1: auxiliary power domain will go
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down and after short period (about 1 second) up.
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When psu1_on or psu2_on is written 1, related unit will be
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disconnected from the power source, when written 0 - connected.
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If both are written 1 - power supplies main power domain will
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go down.
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When pwr_down is written 1, system's main power domain will go
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down.
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The files are write only.
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What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
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reset_aux_pwr_or_ref
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reset_asic_thermal
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reset_hotswap_or_halt
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reset_hotswap_or_wd
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reset_fw_reset
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reset_long_pb
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reset_main_pwr_fail
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reset_short_pb
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reset_sw_reset
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Date: June 2018
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KernelVersion: 4.19
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Contact: Vadim Pasternak <vadimpmellanox.com>
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Description: These files show the system reset cause, as following: power
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auxiliary outage or power refresh, ASIC thermal shutdown, halt,
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hotswap, watchdog, firmware reset, long press power button,
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short press power button, software reset. Value 1 in file means
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this is reset cause, 0 - otherwise. Only one of the above
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causes could be 1 at the same time, representing only last
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reset cause.
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The files are read only.
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What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/
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reset_comex_pwr_fail
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reset_from_comex
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reset_system
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reset_voltmon_upgrade_fail
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Date: November 2018
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KernelVersion: 4.21
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Contact: Vadim Pasternak <vadimpmellanox.com>
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Description: These files show the system reset cause, as following: ComEx
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power fail, reset from ComEx, system platform reset, reset
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due to voltage monitor devices upgrade failure,
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Value 1 in file means this is reset cause, 0 - otherwise.
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Only one bit could be 1 at the same time, representing only
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the last reset cause.
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The files are read only.
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