On upgrade from uboot v2017 Comphy-0: UNCONNECTED

[Lev Olshvang]

Hello list,

My board is Marvell Armada 3720 Espressobin variant
I am trying to upgrade from uboot v2017 to latest one
I was able to get to uboot shell prompt after disabling almost all and leaving
only network.
For a network board has Marvell switch.
I added some debug prints to drivers/phy/marvell/comphy_a3700.c


The boot console is

U-Boot 2023.07.02 / 2GB-00012-g053342b3b2-dirty (Apr 11 2024 - 07:55:53 +0300)

Model: Marvell Armada 3720 Community Board ESPRESSOBin
DRAM:  2 GiB
Core:  36 devices, 18 uclasses, devicetree: separate
comphy_a3700_find_lane port 0
comphy_a3700_find_lane port 0
comphy_a3700_fill_cfg phy_mode rgmii
comphy_a3700_find_lane port 1
comphy_a3700_find_lane port 1
comphy_a3700_find_lane port 1
comphy_a3700_fill_cfg phy_mode sgmii
Initialize serdes number 0
Serdes type = 0x0 invert=0
Initialize serdes number 1
Serdes type = 0x0 invert=0
Initialize serdes number 2
Serdes type = 0x0 invert=0
Comphy chip #0:
Comphy-0: UNCONNECTED   1.25 Gbps
Comphy-1: UNCONNECTED   1.25 Gbps
Comphy-2: UNCONNECTED
MMC:
Loading Environment from nowhere... OK
Net:
Warning: ethernet at 30000 (eth0) using random MAC address - a2:e6:03:04:fb:71
eth0: ethernet at 30000
Warning: ethernet at 40000 (eth1) using random MAC address - 72:3b:77:86:69:83
, eth1: ethernet at 40000


I wonder  what Serdes type 0 means?

Help will be greatly appreciated,
Lev