P2020 PHY control problem ..
P2020 related questions.
Related to TSEC2 Ethernet PHY chip control
MDC, MDIO port measurement result
PHY chip control waveform on P2020 (measured by oscilloscope): Normal
Response waveform on PHY chip: Normal
However, output using MII utility commands:
The chip ID value is read as 0000
Even if PHY chip is removed, chip ID value is read as 0000
(Note: TSEC3 Ethernet PHY chip is normally accessed)
TSEC2, 3 use the same PHY chip
I'm curious about the solution.