linux/Documentation/devicetree/bindings/net/smsc-lan91c111.txt
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   1SMSC LAN91c111 Ethernet mac
   2
   3Required properties:
   4- compatible = "smsc,lan91c111";
   5- reg : physical address and size of registers
   6- interrupts : interrupt connection
   7
   8Optional properties:
   9- phy-device : phandle to Ethernet phy
  10- local-mac-address : Ethernet mac address to use
  11