Does lede suport external phy via rgmii2 for MT7621 platform

For Developers
1

Hi
I have a mt7621 based board, it's six ethernet port, the 6th port is ar8035 phy. I have build latest 17.01 lede, but seems the ethernet doesn't work. How do i config the dts file and resolve the problem?

2

Most likely it is connected via PCI,check with lspci and then specify it in DTS if it is connected

3

Seems not, it is rgmii2 interface of mt7621.

4

Then this thread could help you

5

Thanks a lot!
Right, mt7620 is support external phy via rgmii, it is use port4. But mt7621 should be used port5 to connect the external phy. From the source code of gsw_mt7621.c, in function mt7621_gsw_probe(), it is not correct.
of_property_read_string(np, "mediatek,port4", &port4);
if (port4 && !strcmp(port4, "ephy"))
gsw->port4 = PORT4_EPHY;
else if (port4 && !strcmp(port4, "gmac"))
gsw->port4 = PORT4_EXT;
else
gsw->port4 = PORT4_EPHY;

And comparing soc_mt7620.c and soc_mt7621.c, there is no mt7620_port_init() function, so even if configuring it in dts file, it still does not work.
Is above correct?