Re: [Buildroot] [Help] Problem with BR2_LINUX_KERNEL_CUSTOM_DTS_PATH and kernel 6.12

[Baruch Siach via buildroot <buildroot@buildroot.org>]

Hi Kilian,

On Wed, Jan 01 2025, Kilian Zinnecker via buildroot wrote:
> I am struggeling to get a custom device tree compiled as part of a developing 
> a board support (i.e., for the beaglev-ahead). And I suspect it might have to 
> do with a recent change to mainline kernel 6.12, which buildroot might not 
> take into account yet. Here is what I try:
>
> I add my own device tree source file into the board folder and set the 
> following lines in my defconfig:
>
> BR2_LINUX_KERNEL=y
> BR2_LINUX_KERNEL_CUSTOM_VERSION=y
> BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.7"
> BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
> BR2_LINUX_KERNEL_DTS_SUPPORT=y
> # BR2_LINUX_KERNEL_INTREE_DTS_NAME is not set
> BR2_LINUX_KERNEL_CUSTOM_DTS_PATH="board/beaglev-ahead/beaglev-ahead.dts"
> BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT=y
>
> Now when the kernel gets build, the Makefile throws the error, that there 
> exists no rule to build my particular dtb.

See the link below for a recent discussions of this issue on the list:

  https://lore.kernel.org/buildroot/dcbd3f77-e737-41a2-9f23-87141d0bdf9b@grenoble.cnrs.fr/

Edgar Bonet suggested a fix that you might want to test:

  https://lore.kernel.org/buildroot/035d6d78-0a31-4083-8fa1-65f5be5f74b5@grenoble.cnrs.fr/

baruch

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