quoted

This patch-set is to enable Ethernet controller (DW Ethernet QoS and
DW Ethernet PCS) with SGMII interface in Elkhart Lake.
The DW Ethernet PCS is the Physical Coding Sublayer that is between
Ethernet MAC and PHY and uses MDIO Clause-45 as Communication.

This series look fine to me but unfortunately I don't have my GMAC5.10
setup available to test for regressions ... The changes look isolated
though.

Could you please run the stmmac selftests at least and add the output
here ?

Sure, the selftests feature is good as I am able to detect that the 
dwmac510_xpcs_ops misses the selftest entry. I will fix and add the
selftests results in the v6 cover letter. 

Thanks,
Jose Miguel Abreu