I am trying to add a device tree in a yocto based on the meta-raspberrypi layer.
Adding the device tree via a patch in a bbapend of the kernel recipe is no problem.
But all attempts to add the file in the local.conf of the variable KERNEL_DEVICETREE replace all other device trees.
I.e. on the device is then only my new file. It seems that the "append" works like a "="?
#KERNEL_DEVICETREE:raspberrypi3-64:append = " broadcom/my-custom-tree.dtb"
KERNEL_DEVICETREE:raspberrypi3-64 += " broadcom/my-custom-tree.dtb"
Is there any way to add the device tree?
Preferably without having to create a custom machine for it?