I am confused what is PHY_PWR pin doing, Its providing signal to the base of a
NPN transistor which is feeding the Gate of Mosfet, is this part of circuit handling auto enabled functionality ?
Could somebody kindly explain that aspect of the circuit
(https://github.com/OLIMEX/ESP32-POE/blob/master/HARDWARE/ESP32-PoE-hardware-revision-D/ESP32-PoE_Rev_D.pdf)
It is there to allow software reset. If you wish to restart just the Ethernet for example or keep it in reset to save power and turn it on only when ready to transmit or receive.