[linux-yocto] Modify the device trees for sama5d35-xplained

[Morgan Guillou]

So this should be : meta-atmel/recipes-bsp
I'll try 
________________________________________
De : Bruce Ashfield [bruce.ashfield at windriver.com]
Envoyé : lundi 18 janvier 2016 20:41
À : Morgan Guillou
Cc : linux-yocto at yoctoproject.org
Objet : Re: [linux-yocto] Modify the device trees for sama5d35-xplained

On 16-01-18 12:03 PM, Morgan Guillou wrote:
> Thanks Bruce,
> It was not exactly what I ran, I ran that:
> $ bitbake core-image-minimal -c compile -f
> This should rebuild only the kernel as I read in that doc: https://www.yoctoproject.org/sites/default/files/kernel-lab-1.6.pdf
>
> Sorry, I'm not used with linux, I'm right or not ?

You need to force the compile of the kernel package, not the
image type.

So whatever recipe is providing your kernel, that is the name
you should be using.

Bruce

>
> Morgan
>
> -----Message d'origine-----
> De : Bruce Ashfield [mailto:bruce.ashfield at windriver.com]
> Envoyé : vendredi 15 janvier 2016 20:09
> À : Morgan Guillou
> Cc : linux-yocto at yoctoproject.org
> Objet : Re: [linux-yocto] Modify the device trees for sama5d35-xplained
>
> On 16-01-15 02:00 PM, Morgan Guillou wrote:
>> Thanks Bruce  for the answer,
>> So I did:
>> #bitbake -f -c compile core-image-minimal
>
> This should have been your kernel recipe, not the image. Did you typo that ? Or is that what you really ran ?
>
> Bruce
>
>> #bitbake core-image-minimal
>> It repackaging rootfs.ubi and ubi files, but no dtb files !
>> What's wrong ?
>>
>> -----Message d'origine-----
>> De : Bruce Ashfield [mailto:bruce.ashfield at windriver.com]
>> Envoyé : vendredi 15 janvier 2016 19:43 À : Morgan Guillou;
>> linux-yocto at yoctoproject.org Objet : Re: [linux-yocto] Modify the
>> device trees for sama5d35-xplained
>>
>> On 16-01-15 01:24 PM, Morgan Guillou wrote:
>>> I've been working with hardware sama5d35-xplained.
>>>
>>> I used the at91 tutorial to compile and install yocto distribution on
>>> the target, that's fine.
>>>
>>> My next step is to redefine one interface that is custom to my board,
>>> I want to enable the USART2.
>>>
>>> I modify the dts file:
>>> "/poky/build-atmel/tmp/work-shared/sama5d3-xplained/kernel-source/arch/arm/boot/dts/at91-sama5d3_xplained.dts"
>>> to add :
>>>
>>> usart2: serial at f8020000{
>>>
>>> Pinctrl-0 = <&pinctrl_usart2>;
>>>
>>> Status = "okay":
>>>
>>> };
>>>
>>> Maybe I'm just tired, or maybe this is just hard... but the dtb file
>>> is not updated when I run bitbake.
>>
>> bitbake won't know that you've updated the source. So you'll need to force a re-compile of the kernel, and then rebuild your image.
>>
>> bitbake -f -c compile <your kernel recipe>
>>
>> And then you should see things repackaging next time you build the image.
>>
>> Bruce
>>
>>>
>>> So do I have to manually compile the dts file or is there some way to
>>> do it via "bitbake core-image-minimal" ?
>>>
>>> Thanks,
>>>
>>> Morgan.
>