Can the LVDS component (or any other service) on the STM32MP257D support SGMII

[DeeKay789]

I'm investigating 2.5Gb Ethernet PHYs for our STM32MP257D board.  Most, if not all, require SGMII which is not explicitly supported in the ST MPU documentation.

Anyone been down this road?

Anyone know of a compatible 2.5Gb PHY that can use the STM32MP2xx RGMII?

Thx

[PatrickF · Accepted solution]

Hi @DeeKay789 ,

RGMII is limited to 1Gbits/s as per standard.

The LVDS interface is intended for display only.

I guess the PCIE interface is a good candidate for a 2.5Gbits/s interface (PCIE of STM32MP257F is 5Gbits/s full duplex raw bandwidth). We have some customer using PCIE for Wifi 6.

Regards.

[DeeKay789]

Thx @PatrickF . I did look at the SerDes of the PCIe but I'm using the ComboPHY for a direct USB3 connection.  Do I therefore presume your suggestion will mean I'll need to implement a full PCIe bus and hang both USB3 and 2.5Gb PHY (/switch/hub) off that yes?