linux/Documentation/devicetree/bindings/virtio/mmio.txt
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Prefs
   1* virtio memory mapped device
   2
   3See http://ozlabs.org/~rusty/virtio-spec/ for more details.
   4
   5Required properties:
   6
   7- compatible:   "virtio,mmio" compatibility string
   8- reg:          control registers base address and size including configuration space
   9- interrupts:   interrupt generated by the device
  10
  11Example:
  12
  13        virtio_block@3000 {
  14                compatible = "virtio,mmio";
  15                reg = <0x3000 0x100>;
  16                interrupts = <41>;
  17        }
  18