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From: Julien Grall <julien.grall@citrix.com>
To: Ian Campbell <ian.campbell@citrix.com>
Cc: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
	David Vrabel <david.vrabel@citrix.com>,
	"Chris (Christopher) Brand" <chris.brand@broadcom.com>
Subject: Re: Bug in devicetree_for_each_node() in xen/arch/arm/bootfdt.c ?
Date: Tue, 23 Jun 2015 11:32:13 +0100	[thread overview]
Message-ID: <558935AD.3030606@citrix.com> (raw)
In-Reply-To: <1435055228.28264.198.camel@citrix.com>



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

  reply	other threads:[~2015-06-23 10:32 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-22 23:02 Bug in devicetree_for_each_node() in xen/arch/arm/bootfdt.c ? Chris (Christopher) Brand
2015-06-23  9:44 ` David Vrabel
2015-06-23  9:57   ` Ian Campbell
2015-06-23 10:08     ` Ian Campbell
2015-06-23 10:10       ` Ian Campbell
2015-06-23 10:01   ` Julien Grall
2015-06-23 10:08 ` Julien Grall
2015-06-23 10:27   ` Ian Campbell
2015-06-23 10:32     ` Julien Grall [this message]
2015-06-23 10:43       ` Ian Campbell
2015-06-24 18:57   ` Chris (Christopher) Brand
2015-07-15 23:35   ` Chris (Christopher) Brand
2015-07-16  8:50     ` [PATCH] xen: arm: bootfdt: Avoid reading off the front of *_cells array Ian Campbell
2015-07-16 12:06       ` Julien Grall
2015-07-16 12:45         ` Ian Campbell
2015-07-16 15:52         ` Ian Campbell

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