[PATCH v5 06/17] docs: Xen ARM DT bindings
From: Stefano Stabellini <hidden>
Date: 2012-09-17 17:43:14
Also in:
linux-devicetree, lkml, xen-devel
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add a doc to describe the Xen ARM device tree bindings Changes in v5: - add a comment about the size of the grant table memory region; - add a comment about the required presence of a GIC node; - specify that the described properties are part of a top-level "hypervisor" node; - specify #address-cells and #size-cells for the example. Changes in v4: - "xen,xen" should be last as it is less specific; - update reg property using 2 address-cells and 2 size-cells. Signed-off-by: Stefano Stabellini <redacted> CC: devicetree-discuss at lists.ozlabs.org CC: David Vrabel <redacted> CC: Rob Herring <redacted> CC: Dave Martin <redacted> --- Documentation/devicetree/bindings/arm/xen.txt | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/xen.txt
diff --git a/Documentation/devicetree/bindings/arm/xen.txt b/Documentation/devicetree/bindings/arm/xen.txt
new file mode 100644
index 0000000..0f7b9c2
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/xen.txt@@ -0,0 +1,25 @@ +* Xen hypervisor device tree bindings + +Xen ARM virtual platforms shall have a top-level "hypervisor" node with +the following properties: + +- compatible: + compatible = "xen,xen-<version>", "xen,xen"; + where <version> is the version of the Xen ABI of the platform. + +- reg: specifies the base physical address and size of a region in + memory where the grant table should be mapped to, using an + HYPERVISOR_memory_op hypercall. The memory region is large enough to map + the whole grant table (it is larger or equal to gnttab_max_grant_frames()). + +- interrupts: the interrupt used by Xen to inject event notifications. + A GIC node is also required. + + +Example (assuming #address-cells = <2> and #size-cells = <2>): + +hypervisor { + compatible = "xen,xen-4.3", "xen,xen"; + reg = <0 0xb0000000 0 0x20000>; + interrupts = <1 15 0xf08>; +};
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1.7.2.5