[meta-xilinx] linux-dtb.inc

[Mike Looijmans]

Hi,

My solution for this was to simply place "my" DTS into the kernel at the 
location where the kernel stores them. So just a simple "cp" in 
do_install_prepend to put it there was enough.

Actually, I've been using a DTS file that just lists the periferals that 
I added and then just #includes the rest of the devicetree from the 
kernel. It looks a lot more structured that listing it all again.


On 08/22/2013 07:13 AM, Sipke Vriend wrote:
> Hi Philip,
> +Cc openembedded-core.
>
> I believe openembedded-core changed from using DTC directly,
> to using in kernel make to generate DTBs specified in
> KERNEL_DEVICETREE.
> http://git.openembedded.org/openembedded-core/commit/?id=72980d5bb465f0640ed451d1ebb9c5d2a210ad0c
>
> This regressed meta-xilinx and for now the fix you discuss corrects
> that, but you are correct in thinking that it may not be an ideal
> solution.
> http://git.yoctoproject.org/cgit/cgit.cgi/meta-xilinx/commit/?id=ad5139ef91c7a1f4a32261238426f8661eb57871
> This fix is providing the ability for the meta-xilinx user to build both
> in kernel tree DTS (as per the new oe-core way) and or the existing
> meta-xilinx recipe space DTSs.
>
> I suspect most BSP providers can live with in kernel tree DTSs, but
> it is useful for meta-xilinx to have the ability to build recipe space
> DTSs as Xilinx architectures, due to their nature, are configurable
> (especially for kc705-trd-microblaze and any future microblaze
> machines added to meta-xilinx).
>
> As you correctly noted, the same include file name is used as this is
> effectively the previous dtb generation script from openembedded-core,
> minus some duplication. It was intentional to keep the same file name
> so the 'connection' is seen.
>
> Any alternate methods know for building in recipe space DTSs within
> openembedded-core will be much appreciated.
>
> Regards
> Sipke
>
>> 

Met vriendelijke groet / kind regards,

Mike Looijmans

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-----Original Message-----
>> On  Thursday, 22 August 2013 8:58 AM Behalf Of Philip Balister wrote:
>>
>> OE-core and meta-xilinx both have linux-dtb.inc files, but they are
>> different.
>>
>> https://github.com/Xilinx/meta-xilinx/blob/master/recipes-kernel/linux/
>> linux-dtb.inc
>>
>> and
>>
>> http://git.openembedded.org/openembedded-core/tree/meta/recipes-kernel/
>> linux/linux-dtb.inc
>>
>> Understanding how these work is not something I am good at, but I am
>> concerned when I see a BSP doing something similar but different to the
>> core layers. What are the chances we can understand the differences and
>> see about consolidating the differences in oe-core?
>>
>> Philip
>> _______________________________________________
>> meta-xilinx mailing list
>> meta-xilinx at yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/meta-xilinx
>>
>>
>
>
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