linux-kernel - Re: [PATCH] kbuild: verify dtoverlay files against schema

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Date: Tue, 28 May 2024 08:15:17 -0500
From: Rob Herring <robh@...nel.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Masahiro Yamada <masahiroy@...nel.org>, Nathan Chancellor <nathan@...nel.org>, 
	Nicolas Schier <nicolas@...sle.eu>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org, 
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: verify dtoverlay files against schema

On Mon, May 27, 2024 at 6:34 AM Dmitry Baryshkov
<dmitry.baryshkov@...aro.org> wrote:
>
> Currently only the single part device trees are validated against DT
> schema. For the multipart schema files only the first file is validated.

What do you mean by multipart schema files? Did you mean multipart DTs
(i.e. base plus overlays)?

Looks good otherwise and I can fix that up.

> Extend the fdtoverlay commands to validate the resulting DTB file
> against schema.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>  scripts/Makefile.lib | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 9f06f6aaf7fc..29da0dc9776d 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -407,8 +407,15 @@ cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ;
>                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
>         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
>
> +DT_CHECK_CMD = $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA)
> +
> +ifneq ($(CHECK_DTBS),)
> +quiet_cmd_fdtoverlay = DTOVLCH $@
> +      cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs) ; $(DT_CHECK_CMD) $@ || true
> +else
>  quiet_cmd_fdtoverlay = DTOVL   $@
>        cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs)
> +endif
>
>  $(multi-dtb-y): FORCE
>         $(call if_changed,fdtoverlay)
> @@ -421,7 +428,7 @@ DT_BINDING_DIR := Documentation/devicetree/bindings
>  DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json
>
>  quiet_cmd_dtb =        DTC_CHK $@
> -      cmd_dtb =        $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true
> +      cmd_dtb =        $(cmd_dtc) ; $(DT_CHECK_CMD) $@ || true
>  else
>  quiet_cmd_dtb = $(quiet_cmd_dtc)
>        cmd_dtb = $(cmd_dtc)
>
> ---
> base-commit: 8314289a8d50a4e05d8ece1ae0445a3b57bb4d3b
> change-id: 20240527-dtbo-check-schema-4f695cb98de5
>
> Best regards,
> --
> Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>