[Buildroot] ADS7846 Module touch Raspberry PI 2 - Buildroot

[Buildroot] ADS7846 Module touch Raspberry PI 2 - Buildroot

[astrolite .]

Hi,
I don't know if this question is really relevant with buildroot, but i've a
problem using this module with devicetree.
I've put into config.txt, the specific configuration for working with the
touch display but nothing happen.
In this tutorial :  http://brummbeere.readthedocs.org/en/latest/raspi.html
there is note:

"
To be able to add support for device tree overlays in a later step we need
to download the Raspberry tools. The tools contain a script mkknlimg that
adds a trailer to the self-compiled kernel.
"
What i need for use devicetree with buildroot?
Thanks a lot,
Giovanni.
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[Buildroot] ADS7846 Module touch Raspberry PI 2 - Buildroot

[Peter Seiderer]

Hello Giovanni,

On Thu, 19 Nov 2015 20:28:39 +0100, "astrolite ." <ciclonite@gmail.com> wrote:

> Hi,
> I don't know if this question is really relevant with buildroot, but i've a
> problem using this module with devicetree.
> I've put into config.txt, the specific configuration for working with the
> touch display but nothing happen.
> In this tutorial :  http://brummbeere.readthedocs.org/en/latest/raspi.html
> there is note:
> 
> "
> To be able to add support for device tree overlays in a later step we need
> to download the Raspberry tools. The tools contain a script mkknlimg that
> adds a trailer to the self-compiled kernel.
> "
> What i need for use devicetree with buildroot?
> Thanks a lot,
> Giovanni.

The actual buildroot config for Raspberry Pi already contains new enough
kernel source and userland tools for device tree support, see [1] and
the mkknlimg hint (line 129ff). More hints for your touchpanel support see
[2] and [3]...

Regards,
Peter


[1] http://git.buildroot.net/buildroot/tree/board/raspberrypi/readme.txt
[2] https://github.com/notro/fbtft/wiki/Touchpanel
[3] https://github.com/raspberrypi/firmware/blob/master/boot/overlays/README