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Hm, nothing special here... Check differences in MDIO registers between 88E1111 and KSZ9021. E.g. check if software reset bit is in the same place?
P.S. I suppose ethernet is not working right?
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Hm, i think software reset it is register of TSE IP?
Embedded Peripherals IP
User Guide
Table 25–7. Control Register
SW_RESET
Software can reset the core by writing to this bit twice. Upon the
second write, the core is reset. The logic which sequences the
software reset process then resets itself automatically.
Executing a software reset when a DMA transfer is active may
result in permanent bus lockup until the next system reset.
Hence, Altera recommends that you use the software reset as
your last resort.
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