I want to use a LAN8720 (RMII) with the iMX6SX.
The IMX6SXHDG does not cover the Ethernet Interface at all.
The SX Reference Manual covers it very badly.
If anyone has got the combination of LAN8720 + SX working correctly, I be obliged if they could review my schematics below or share theirs.
(My biggest cause for concern is the generation of the REF_CLK - as there seems to continual confusion about this.)