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Diffstat (limited to 'Documentation/devicetree/bindings/virtio/mmio.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/virtio/mmio.txt | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt deleted file mode 100644 index 0a575f329f6e..000000000000 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ /dev/null @@ -1,47 +0,0 @@ -* virtio memory mapped device - -See https://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 - -Required properties for virtio-iommu: - -- #iommu-cells: When the node corresponds to a virtio-iommu device, it is - linked to DMA masters using the "iommus" or "iommu-map" - properties [1][2]. #iommu-cells specifies the size of the - "iommus" property. For virtio-iommu #iommu-cells must be - 1, each cell describing a single endpoint ID. - -Optional properties: - -- iommus: If the device accesses memory through an IOMMU, it should - have an "iommus" property [1]. Since virtio-iommu itself - does not access memory through an IOMMU, the "virtio,mmio" - node cannot have both an "#iommu-cells" and an "iommus" - property. - -Example: - - virtio_block@3000 { - compatible = "virtio,mmio"; - reg = <0x3000 0x100>; - interrupts = <41>; - - /* Device has endpoint ID 23 */ - iommus = <&viommu 23> - } - - viommu: iommu@3100 { - compatible = "virtio,mmio"; - reg = <0x3100 0x100>; - interrupts = <42>; - - #iommu-cells = <1> - } - -[1] Documentation/devicetree/bindings/iommu/iommu.txt -[2] Documentation/devicetree/bindings/pci/pci-iommu.txt |