The P1010RDB makes use of SGMII interface on eTSEC2 and eTSEC3.
What determine the use of register 4 (and also 5)as being the 1000BASE-X ANA or as ANA_SGMII?
In U-Boot the value 1a0 is written to register 4 which to seem to be for the 1000BASE-X ANA, though the interface is SGMII.
So why is it not the value 0x4001 as described in AN3869?
Note: We currently have our design using a P1014 and BCM54616 in SGMII mode. At present I cannot get a link to work between the TBI PHY and external PHY.