[meta-xilinx] bitbake new version of xilinx_emacps.c

[Nathan Rossi]

On Thu, Jul 2, 2015 at 7:53 AM, Harold Lapprich
<hlapprich at pixel-velocity.com> wrote:
> To Whom It May Concern,
>
>
>
> Currently working with Yocto 'daisy' xlnx-3.14 for an embedded project and
> need to upgrade 'xilinx_emacps.c' and looking for directions or insight on
> how best to do this, does anyone have a cookbook example that I can look at
> (haven't been able to identify the layer for the driver and since it is a
> devicetree attribute I am guessing meta-xlinx)?
>

The emacps driver is part of the linux-xlnx kernel. You will need to
patch the kernel to change xilinx_emacps.c. The easiest way to go
about doing that is to create a patch against the kernel source and
then use a .bbappend to get yocto to apply the patch during the build
of the linux-xlnx kernel.

There is some documentation around this topic here:
http://www.yoctoproject.org/docs/current/kernel-dev/kernel-dev.html#applying-patches

Regards,
Nathan

>
>
> Thanks,
>
> Harold
>
>
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