Generic understanding/consideration is that phy-mode as sgmi means that the
internal PCS(Physical Coding Sublayer) should be enabled by default.
Xilinx GEM implementation allows configuration GEM (gmii mode) + PL PCS PMA
(sgmii mode, Physical Medum Attachment) but in this case phy-mode should be
setup as gmii.
The reason for this assumption is that phy-mode should be described based
on GEM configuration not based on mode coming out of PHY.
Also Linux kernel automatically setting up PCSSEL bit when phy mode is
sgmii without a need to specified additional DT propety.
All our DTSes with sgmii phy mode have this flag enabled that's why there
is no need/reason to just duplicate information.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/2ecdbcc4ce692e2f8b3e7054a2abab35f6c03a69.1726213052.git.michal.simek@amd.com
VPXA2785(vp-x-a2785-00) is evaluation board which contains two PCIe-Edge
fingers, one for PCIe-B(gen5x8) and one for CPM(dual gen5x8, gen5x16).
Each of the ports can operate in endpoint or root port mode. This allows
the single card to be used for both root port, endpoint, and switch modes.
The board is designed in the similar manner as others Versal boards. It
means board also have ZynqMP Zu4 System Controller which is described in a
separate file.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/59d3b1f7e785bc65518b465e5122fd2787616a93.1695808407.git.michal.simek@amd.com
