Re: [PATCH 08/21] dt-bindings: mfd: x-powers: add AC200

+            ethernet-phy-control {
+                compatible = "x-powers,ac200-ephy-ctl";
+                nvmem-cells = <&ephy_calibration>;
+                nvmem-cell-names = "calibration";
+                phy-mode = "rmii";
+            };

What do you mean by an ethernet PHY control?

I assume this is not an actual Ethernet PHY, but some control logic
around it? Where is the ethernet PHY itself?

       Andrew