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

From: Maxime Chevallier

Date: Tue Jun 30 2026 - 11:47:33 EST




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