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

[Bruce Ashfield]

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.
>
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> Morgan Guillou
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