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    SubjectRe: [PATCH v4 06/24] docs: Xen ARM DT bindings
    On Fri, Sep 14, 2012 at 12:13:08PM +0100, Stefano Stabellini wrote:
    > Add a doc to describe the Xen ARM device tree bindings
    >
    >
    > 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 <stefano.stabellini@eu.citrix.com>
    > CC: devicetree-discuss@lists.ozlabs.org
    > CC: David Vrabel <david.vrabel@citrix.com>
    > CC: Rob Herring <robherring2@gmail.com>
    > CC: Dave Martin <dave.martin@linaro.org>
    > ---
    > Documentation/devicetree/bindings/arm/xen.txt | 22 ++++++++++++++++++++++
    > 1 files changed, 22 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..1f8f7d4
    > --- /dev/null
    > +++ b/Documentation/devicetree/bindings/arm/xen.txt
    > @@ -0,0 +1,22 @@
    > +* Xen hypervisor device tree bindings
    > +
    > +Xen ARM virtual platforms shall have 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.
    > +
    > +- interrupts: the interrupt used by Xen to inject event notifications.

    Its singular here.. but in the example its plurar. What if you use
    multiple of the same number ("16 0xf")?

    > +
    > +
    > +Example:
    > +
    > +hypervisor {
    > + compatible = "xen,xen-4.3", "xen,xen";
    > + reg = <0 0xb0000000 0 0x20000>;

    So two grant tables?

    Hm, physical address is zero, and the size is 0xbignumber?
    Or is the '0' denotating a seperator of arguments, so it is
    0xb000.. for physical address and 0x20000 for size?


    > + interrupts = <1 15 0xf08>;
    > +};
    > --
    > 1.7.2.5


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