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

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Add documentation for the new attributes for:
- Exposing reset causes types asserted by: platform reset, SoC reset,
  AC power failure, software power off request.
- Setting and removing system VPD (EEPROM) hardware write protection.
- Voltage regulator devices configuration update status and firmware
  version.
- Setting PCIe ASIC reset to disable or enable state during PCIe root
  complex reset.
- System static topology identification, like system's static I2C
  topology, number and type of FPGA devices within the system and so on.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Vadim Pasternak 2020-01-13 16:28:34 +00:00 committed by Andy Shevchenko
parent 1b5937cb63
commit 435d7e10c4
1 changed files with 63 additions and 0 deletions
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63
Documentation/ABI/stable/sysfs-driver-mlxreg-io
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@ -143,3 +143,66 @@ Description: These files show the system reset cause, as following:
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.