Hi Andrew,

quoted

+Optional properties:
+- vsc8531,edge-rate  : Edge rate sets the drive strength of the MAC
+                       interface output signals.  Changing the drive
+                       strength will affect the edge rate of the output
+                       signal.

Are we specifying a rate or a strength? It is called edge-rate, so it
expect it to be a rate, mV/pS or something similar.

I do not know - sorry.

If it is a hard requirement to document these settings using physical units then
we need to requist some help from the HW team.

I will forward this to the HW team - but it will properly take a few days to get
a decent answer.

Best regards
Allan W. Nielsen