Hi Ufedor:
Yes, At most 31 external PHY can be addressed, And I just used 28 external PHY.
May I changed the TBI PHY address to other value? such as: one of 0x00/0x01/0x02/0x03.
Thanks
> May I changed the TBI PHY address to other value? such as: one of 0x00/0x01/0x02/0x03.
Yes.
Please refer to the P1010 QorIQ Integrated Processor Reference Manual, 15.7.6 MII management address register (eTSEC_MDIOx_MIIMADD):
"PHY_Address
At most, 31 external PHYs can be addressed, because one of the 32 possible addresses this field can hold is reserved for the TBI (internal PHY)."