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Re: [Xen-devel] Bug in devicetree_for_each_node() in xen/arch/arm/bootfdt.c ?





On 23/06/2015 11:27, Ian Campbell wrote:
On Tue, 2015-06-23 at 11:08 +0100, Julien Grall wrote:

             reg = <0x0 0x0 0x0 0x40000000 0x0 0x40000000 0x0 0x40000000>;

Although, what the rest of the node used for? Do we expect to parse it?
I wasn't able to find a suitable bindings in the docs...

A reg can encode multiple regions, by just listing them one after the
other. It'll be in the generic docs about reg properties I expect,
there's nothing special about a reg property in a memory node in this
regard.

Xen parses these just fine, via the loop and use of device_tree_get_reg
in process_memory_node

I know that a "reg" can encode multiple regions... My question was related to the "rest of the node" and not the rest of the property... i.e

   region@10000000 {

                contiguous-region;

                reg = <0x10000000 0x1f800000>;

                linux,phandle = <0x2>;

                phandle = <0x2>;

           };

AFAICT we don't parse it.

Regards,

--
Julien Grall

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