[meta-xilinx] [PATCH 0/5] Use kernel device tree when we can

[Nathan Rossi]

On Thu, Nov 5, 2015 at 11:48 AM, Manjukumar Harthikote Matha
<manjukumar.harthikote-matha at xilinx.com> wrote:
> On 11/04/2015 04:08 PM, Nathan Rossi wrote:
>>
>> On Thu, Nov 5, 2015 at 8:02 AM, Manjukumar Matha
>> <manjukumar.harthikote-matha at xilinx.com> wrote:
>>>
>>> This series simplifies some meta-xilinx machine definitions by removing
>>> their
>>> device tree files and using the kernel device tree definitions instead.
>>
>>
>> These changes are definitely the goal, however due to some
>> in-consistency with the device trees in older kernels (v3.19)
>> meta-xilinx is not quite ready to do the switch over. Before doing
>> these changes I was planning on getting the meta-xilinx device trees
>> moved over to the same base include that is used in the kernel.
>> Alongside those changes I was looking into deprecating the whole
>> conf/machine/boards in favour of a more standardized BSP layout, so as
>> to better set-up for supporting more boards/machines.
>>
>
> Thanks.
>
> What has been the practice so far on maintaining/dropping support for
> earlier kernels? For instance, could we drop support for v3.14 (and maybe
> v3.19) on jethro? We can of course continue supporting both versions on
> fido.

There has not been any specific rules/practices, i've just gone with
the flow. However I would like to reduce the number of linux-xlnx
kernel versions that are kept around across releases. For jethro I
don't plan on dropping any kernel versions (primarily due to timing),
but I planning to drop the linux-xlnx 3.14 and 3.19 recipes afterwards
(as long as there are no objections), but linux-yocto will still have
3.14 and 3.19 at least for now so dropping them purely to achieve the
kernel dts goal is a bit problematic, maybe once 3.14 is gone minimal
patching of linux-yocto 3.19 will put us on track for kernel device
trees.

Regards,
Nathan

>
>> Also the zybo device trees are missing some nodes (in linux-xlnx and
>> mainline), so that one should still use the layers dts for now.
>>
> Thanks for the heads up on Zybo.
> We will work on this issue and get linux-xlnx updated
>
> Thanks
> Manju
>
>