Hello everyone,
So I received the PHY chips, and I can confirm....that it came from there.
So in conclusion, if you have the DDR blinks which are faintly lit and the ETH socket blinks off and in your logs via TTL cable you have code similar to mine up to "eth%d: No PHY found".
there's a good chance that the PHY part is responsible for the control board not booting. Because it's one of the last parts to boot (after the CPU in any case).
The following diagram gave me a clue, as it clearly shows that the PHY module controls the ETHERNET, the LEDS and the magnetic.
I hope this has helped some people! (but I curse AMLOGIC anyway, it's poorly documented and fragile as hell).
https://ibb.co/YhKqFSchttps://ibb.co/MRTbH6nhttps://ibb.co/yQVKJWGhttps://ibb.co/PwT5wBL