[PATCH 3/3] net: stmmac: dwmac-socfpga: Add mac-mode DT property support

Maxime Chevallier maxime.chevallier at bootlin.com
Tue Jun 30 08:42:56 PDT 2026



On 6/30/26 17:13, Nazle Asmade, Muhammad Nazim Amirul wrote:

> Yes, Agilex5 has the same concept. The GMII-to-RGMII converter is a 
> Quartus soft IP instantiated in the FPGA fabric — equivalent to the 
> CycloneV EMAC splitter. The XGMAC outputs GMII signals to the FPGA 
> fabric, the soft IP converts them to RGMII, and the RGMII signals then 
> go through the FPGA HVIO pins to the external Marvell 88E1512 PHY.

Does this converter need any special config, and does it expose any
control registers ? or is it fully autonomous ?

If it's fully autonomous, can you detect its presence through some
capability registers or something like that ?


Maxime




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