[meta-freescale] from where to start to port some patches to a newer kernel

[Otavio Salvador]

On Tue, Oct 20, 2015 at 10:55 PM, Ivan Sergio Borgonovo
<mail at webthatworks.it> wrote:
> On 21/10/2015 01:35, Otavio Salvador wrote:
>
>> It depends on how:
>
>
>>   - much access you have to information
>
>
> I've a working yocto layer that use freescale 2.6.35 kernel that includes
> some minor changes to init to set up a display. tslib and some kernel
> patches.
> Most of the patches are related to the attached display.
> Others look like backports or pin configuration (none of which seems to be
> "boot" related).
> No pathces for uboot.

So first thing I would do is to move for U-Boot mainline (or here, u-boot-fslc).

>>   - is the board already supported by Linux mainline?
>
>
> Up to my understanding of the patches, the board shouldn't be very different
> from the original imx28evk so it probably may be supported and I may just
> have to reassign some pins and port the display patches.
>
>>   - compare both kernel sources to see the changes done by the manufactor
>
>
> Ok, going back to re-read my books. Anyway, which kernel would you suggest
> considering the board doesn't look that different from the original
> imx28evk?

I would take linux-fslc 4.1 branch or linux mainline (4.3-rcX).

>> To be honest, I would start at U-Boot and not the kernel as it is
>> easier to hack and also allow for you to learn more about the board
>> specifics.
>
>
> Crossing fingers I may not have to learn how uboot works right now.

It is a nice software and worth learning it ;-)

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
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