[yocto] [meta-raspberrypi] How to modify KERNEL_DEVICETREE?

[Khem Raj]

On 12/17/17 10:36 AM, Drew Moseley wrote:
> I'm trying to figure out how to properly modify the KERNEL_DEVICETREE
> variable.  It seems that the meta-raspberrypi layer uses that variable
> in the sdcard_image-rpi.bbclass and defines it in the machine conf
> layer.  In poky, the variable is set and appended to in the various
> linux-yocto recipes. If I make a similar change in a linux-raspberrypi
> bbappend file, it works fine for the build of the linux-raspberrypi
> recipe but when it is trying to package up the rpi-sdimg file, the
> changes from the kernel recipe are not available and generally the build
> will fail since the files expected during the image creation will not
> have been created during the kernel build.

for packaging reasons its made global and specified in machine.conf you
can append/remove from it via local.conf or other config metadata

> 
> I can envision several different workarounds here but I'm struggling to
> come up with a solid fix. Does anyone have any suggestions?
> 
> It also looks like the meta-freescale layer will have a similar issue.
> 
> Drew
> 
>