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@xxxxxxxxxxxx> --- v1-v2: Changes added by Vadim: - Change "Date" to "January 2020". v3-v4: Comments pointed out by Andy: - Drop blank line between "What" and "Date". - Start each section with "What" keyword. --- Documentation/ABI/stable/sysfs-driver-mlxreg-io | 63 +++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/Documentation/ABI/stable/sysfs-driver-mlxreg-io b/Documentation/ABI/stable/sysfs-driver-mlxreg-io index eb6db7382ae3..b0d90cc696a8 100644 --- a/Documentation/ABI/stable/sysfs-driver-mlxreg-io +++ b/Documentation/ABI/stable/sysfs-driver-mlxreg-io @@ -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. -- 2.11.0
