linux/Documentation/devicetree/bindings/virtio/mmio.txt

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* virtio memory mapped device
See http://ozlabs.org/~rusty/virtio-spec/ for more details.
Required properties:
- compatible: "virtio,mmio" compatibility string
- reg: control registers base address and size including configuration space
- interrupts: interrupt generated by the device
Example:
virtio_block@3000 {
compatible = "virtio,mmio";
reg = <0x3000 0x100>;
interrupts = <41>;
}