openwrtmt

MT7620A--How to enable RGMII port


funcctional Block Diagram

Hi, I do have a MT7620 Board, and want to use RGMII port, on the datasheet comes with board, it shows me a diagram like what I post. the red circle area. shows that somehow the RGMII comes in to the switch port which by my understanding is the LAN port on the board.

my question is how I can enable the RGMII, and connect it with my device(which port on the board I should connect). Is it a auto config or I need to do something for it(eg, DTS).

I am new to this, so please answer more detail. and If I make anything not clear, ask. Thanks


Solution

  • Has been days, but no one come to answer, just post what I found for my question.

    I borrow some machine from lab so that I can check the signal on board. I connect the board to internet and my laptop on the other side. and open a video page on browser. so that there will be some data flow between board and my laptop.

    I use the machine to check the pins on the board which the circuit map shows belong to RGMII. but there is nothing, no signal comes up. which means the RGMII pins doesn't work by default.

    So I assume that I need to edit some DTS to enable the RGMII signal. But I have no idea how to do this now. If anyone knows it. Please write it down. Thanks.