** Also affects: linux-bluefield (Ubuntu Jammy)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2054845
Title:
mlxbf-gige: support fixed phy for Bobcat
Status in linux-bluefield package in Ubuntu:
New
Status in linux-bluefield source package in Jammy:
New
Bug description:
SRU Justification:
[Impact]
Bobcat is a new board which doesn't have an external PHY connected to
the OOB. There are no MDIO busses involved and no PHY involved. The
OOB is directly connected to the switch (MAC to MAC). SO we need to
use the linux fixed phy to be able to emulate the mdio behavior and
load the ethernet driver.
[Fix]
* Register the fixed-phy register in the case of the bobcat.
[Test Case]
* Important: For testing on the bobcat board, make sure the corresponding
UEFI image is also loaded, otherwise, the oob driver will fail to load. For
other board, it is backward compatible.
* Check if the mlxbf-gige is loaded on bobcat
* Check that it is using the fixed-phy via dmesg | grep PHY
* check that the oob interface is pingable
* check that files can be copied over via oob interface
* rmmod/modprobe
* ifconfig up/down
* reboot test
[Regression Potential]
* Redo all the OOB testing on other boards (moonraker) and make sure
the bobcat changes dont trigger any regressions.
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