[PATCH v2 07/10] ARM: tegra: pcie: Add device tree support

Stephen Warren swarren at wwwdotorg.org
Wed Jun 20 13:47:39 EDT 2012


On 06/20/2012 11:41 AM, Mitch Bradley wrote:
> On 6/20/2012 6:32 AM, Stephen Warren wrote:
>> On 06/19/2012 03:31 PM, Mitch Bradley wrote:
>> ...
>>
>>
>> The third cell "offset" is necessary so that the size field has a number
>> space that can include it.
>>
>> Can you expand on that sentence a bit more; I don't quite understand
>> that aspect. Thanks.
> 
> The meaning of "size"(in the context of "reg" which is phys,size) is
> "the device occupies a
> contiguous sequence of addresses beginning at phys and continuing to
> phys+size-1". The
> implicit addition occurs on the last #size-cells cells of the phys.

Ah right of course - that makes perfect sense. Thanks.



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