[Buildroot] [git commit branch/next] linux: allow both in-tree and custom dts files

[Yann E. MORIN <yann.morin.1998@free.fr>]

Simon, All,

On 2018-02-25 17:19 +0100, Arnout Vandecappelle spake thusly:
> commit: https://git.buildroot.net/buildroot/commit/?id=382fe9f9261812682eab2d35e47aa94dc554380e
> branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/next
> 
> For some boards, for example the Raspberry Pi, it's necessary to build
> in-tree dts files as well as custom/out of tree dts-files (dt-blob.bin).
> The existing logic made these two options exclusive, this commit changes
> that to allow both in-tree as well as custom sources for dts files.

This breaks all our cufrrent defconfig files that build a DTB, like
for example configs/stm32f429_disco_defconfig, because the default
that was implied by a choice is no longer true, so we need to add
BR2_LINUX_KERNEL_USE_INTREE_DTS=y to those defconfig files.

Care to send an update, please? ;-)

Regards,
Yann E. MORIN.

> Signed-off-by: Simon van der Veldt <simon.vanderveldt@gmail.com>
> [Arnout: re-wrap help, add extra empty line, change = into +=]
> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
> ---
>  linux/Config.in | 19 +++++++------------
>  linux/linux.mk  |  8 +++++---
>  2 files changed, 12 insertions(+), 15 deletions(-)
> 
> diff --git a/linux/Config.in b/linux/Config.in
> index 1bc8171291..80e85b9e8b 100644
> --- a/linux/Config.in
> +++ b/linux/Config.in
> @@ -363,10 +363,6 @@ config BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
>  config BR2_LINUX_KERNEL_APPENDED_DTB
>  	bool
>  
> -choice
> -	prompt "Device tree source"
> -	default BR2_LINUX_KERNEL_USE_INTREE_DTS
> -
>  config BR2_LINUX_KERNEL_USE_INTREE_DTS
>  	bool "Use a device tree present in the kernel"
>  	help
> @@ -374,14 +370,6 @@ config BR2_LINUX_KERNEL_USE_INTREE_DTS
>  	  the kernel sources. The dts files are located
>  	  in the arch/<arch>/boot/dts folder.
>  
> -config BR2_LINUX_KERNEL_USE_CUSTOM_DTS
> -	bool "Use a custom device tree file"
> -	help
> -	  Use a custom device tree file, i.e, a device
> -	  tree file that does not belong to the kernel
> -	  source tree.
> -endchoice
> -
>  config BR2_LINUX_KERNEL_INTREE_DTS_NAME
>  	string "Device Tree Source file names"
>  	depends on BR2_LINUX_KERNEL_USE_INTREE_DTS
> @@ -390,6 +378,13 @@ config BR2_LINUX_KERNEL_INTREE_DTS_NAME
>  	  the trailing .dts. You can provide a list of
>  	  dts files to build, separated by spaces.
>  
> +config BR2_LINUX_KERNEL_USE_CUSTOM_DTS
> +	bool "Use a custom device tree file"
> +	help
> +	  Use a custom device tree file, i.e, a device
> +	  tree file that does not belong to the kernel
> +	  source tree.
> +
>  config BR2_LINUX_KERNEL_CUSTOM_DTS_PATH
>  	string "Device Tree Source file paths"
>  	depends on BR2_LINUX_KERNEL_USE_CUSTOM_DTS
> diff --git a/linux/linux.mk b/linux/linux.mk
> index 776304e730..ab940e7305 100644
> --- a/linux/linux.mk
> +++ b/linux/linux.mk
> @@ -119,13 +119,15 @@ endif
>  LINUX_VERSION_PROBED = `$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) --no-print-directory -s kernelrelease 2>/dev/null`
>  
>  ifeq ($(BR2_LINUX_KERNEL_USE_INTREE_DTS),y)
> -KERNEL_DTS_NAME = $(call qstrip,$(BR2_LINUX_KERNEL_INTREE_DTS_NAME))
> -else ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_DTS),y)
> +KERNEL_DTS_NAME += $(call qstrip,$(BR2_LINUX_KERNEL_INTREE_DTS_NAME))
> +endif
> +
> +ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_DTS),y)
>  # We keep only the .dts files, so that the user can specify both .dts
>  # and .dtsi files in BR2_LINUX_KERNEL_CUSTOM_DTS_PATH. Both will be
>  # copied to arch/<arch>/boot/dts, but only the .dts files will
>  # actually be generated as .dtb.
> -KERNEL_DTS_NAME = $(basename $(filter %.dts,$(notdir $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_DTS_PATH)))))
> +KERNEL_DTS_NAME += $(basename $(filter %.dts,$(notdir $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_DTS_PATH)))))
>  endif
>  
>  KERNEL_DTBS = $(addsuffix .dtb,$(KERNEL_DTS_NAME))
> _______________________________________________
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