Commit b1a9c697 authored by Michael Shych's avatar Michael Shych Committed by Hans de Goede
Browse files

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



Add documentation for the new attributes:
- "phy_reset" - Reset PHY.
- "mac_reset" - Reset MAC.
- "qsfp_pwr_good" - The power status of QSFP ports.

Signed-off-by: default avatarMichael Shych <michaelsh@nvidia.com>
Reviewed-by: default avatarVadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220430115809.54565-4-michaelsh@nvidia.com


Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 662f2482

Documentation/ABI/stable/sysfs-driver-mlxreg-io

+36 −0
Original line number Diff line number Diff line
@@ -467,3 +467,39 @@ Description: These files provide the maximum powered required for line card 
		feeding and line card configuration Id.



		The files are read only.



What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/phy_reset

Date:		May 2022

KernelVersion:	5.19

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	This file allows to reset PHY 88E1548 when attribute is set 0

		due to some abnormal PHY behavior.

		Expected behavior:

		When phy_reset is written 1, all PHY 88E1548 are released

		from the reset state, when 0 - are hold in reset state.



		The files are read/write.



What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/mac_reset

Date:		May 2022

KernelVersion:	5.19

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	This file allows to reset ASIC MT52132 when attribute is set 0

		due to some abnormal ASIC behavior.

		Expected behavior:

		When mac_reset is written 1, the ASIC MT52132 is released

		from the reset state, when 0 - is hold in reset state.



		The files are read/write.



What:		/sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/qsfp_pwr_good

Date:		May 2022

KernelVersion:	5.19

Contact:	Vadim Pasternak <vadimpmellanox.com>

Description:	This file shows QSFP ports power status. The value is set to 0

		when one of any QSFP ports is plugged. The value is set to 1 when

		there are no any QSFP ports are plugged.

		The possible values are:

		0 - Power good, 1 - Not power good.



		The files are read only.