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SubjectRe: [PATCH v3 7/9] ARM: add Armada 1500 and Sony NSZ-GS7 device tree files
On 11/08/2013 07:24 PM, Jason Cooper wrote:
> On Fri, Nov 08, 2013 at 12:06:26PM -0600, Kumar Gala wrote:
>> On Nov 8, 2013, at 10:57 AM, Jason Cooper wrote:
>>> On Fri, Nov 08, 2013 at 10:13:19AM -0600, Kumar Gala wrote:
>>>> On Nov 5, 2013, at 8:28 AM, Sebastian Hesselbarth wrote:
>>> ...
>>>>> .../devicetree/bindings/arm/marvell,berlin.txt | 24 +++
>>>>> arch/arm/boot/dts/Makefile | 2 +
>>>>> arch/arm/boot/dts/berlin2-sony-nsz-gs7.dts | 29 +++
>>>>> arch/arm/boot/dts/berlin2.dtsi | 227 ++++++++++++++++++++
>>>>> 4 files changed, 282 insertions(+)
>>>>> create mode 100644 Documentation/devicetree/bindings/arm/marvell,berlin.txt
>>>>> create mode 100644 arch/arm/boot/dts/berlin2-sony-nsz-gs7.dts
>>>>> create mode 100644 arch/arm/boot/dts/berlin2.dtsi
>>>>
>>>> Haven't we been trying to go away from non-prefixed dts/dtsi?
>>>
>>> hmmm, this is the first I've heard of that. Although, your proposal
>>> (in another thread) makes more sense now. :)
>>>
>>>> So should these be something like marvell-berlin2-...
>>>
>>> I don't recall this being brought up at the summit, nor in Grant's
>>> report. I do need to give it a more careful read this weekend, though.
>>> Perhaps I missed something.
>>
>> This was based on review comments Olof gave when we pushed some .dts
>> files for MSM/APQ Qualcomm Technologies soc/boards.
>
> As Andrew Lunn mentioned to me earlier, we should consider the fact that
> the dts file names are being used by Debian's flash-kernel. Oh no!
> Another ABI! ;-)
>
> Personally, I think dtc should be using the board compatible string, and
> naming the resultant dtbs the same, eg
>
> $ dtc kirkwood-dreamplug.dts
> globalscale,dreamplug-003-ds2001.dtb
>
> This would free us up to rename the dts files as needed. dtb filenames
> would be guaranteed unique and consistent. It would also allow us to
> catch inadvertent compatible string collisions earlier.

Besides the dtc output scheme, I also like the idea of a more consistent
dts/dtsi file naming. What about the scheme below, which also allows us
to get rid of vendor-soc-vendor-board.dts naming (which already leads to
quite long names):

(a) vendor,soc.dtsi and vendor,board.dts

or if dtc/cpp doesn't like ',' in includes

(b) vendor-soc.dtsi and vendor-board.dts

for this patch, that would give us

marvell,berlin2.dtsi and sony,nsz-gs7.dts.

If you propose a scheme we should follow, I'd be happy to apply that
first on this patch set. If we have a dtc output scheme, too, that
scheme can be more like best practice instead of a hard rule.

Sebastian



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