Subject: Re: DSA with MV88E6321 and imx28

From: Andrew Lunn <[email-masked]>
Date: Thu, 6 Jun 2019 15:35:01 +0200

> >From our hardware developer I know now that we are using a "mini" SFF 
> which has no i2c eeprom. 

O.K. Does this mini SFF have LOS, TX-Disable, etc? Are these connected
to GPIOs? I assume the SFF is fibre? And it needs the SERDES to speak
1000BaseX, not SGMII?

> Switch				|	external
> Port 0 - internal serdes 0x0c --|-------Mini SFF 1x8 Transceiver
> 				|
> Port 0 - internal serdes 0x0d --|-------Mini SFF 1x8 Transceiver
> 				|
> Port 2 ----------RGMII----------|-------KSZ9031 PHY 0x02(strap)--Transceiver
> 				|
> Port 3 - internal PHY 0x03 -----|-------Transceiver
> 				|
> Port 3 - internal PHY 0x04 -----|-------Transceiver
> 				|			
> Port 5 - CPU-Port RMII ---------|-------CPU
> 				|
> Port 6 ----------RGMII----------|-------KSZ9031 PHY 0x06(strap)--Transceiver

So the current state is that just the SFF ports are not working? All
the copper PHYs are O.K.

    Andrew