[PATCH v3 2/8] Makefile: Add support for DT bindings schema checks

[Simon Glass]

On Thu, Dec 28, 2023 at 11:58 AM Sumit Garg <sumit.garg at linaro.org> wrote:
>
> This adds the build infrastructure for checking DT binding schema
> documents and validating dtb files using the binding schema. Here we use
> devicetree-rebasing directory to provide the DT bindings.
>
> Dependency:
> -----------
>
> The DT schema project must be installed in order to validate the DT schema
> binding documents and validate DTS files using the DT schema. The DT schema
> project can be installed with pip::
>
>     pip3 install dtschema
>
> Note that 'dtschema' installation requires 'swig' and Python development
> files installed first. On Debian/Ubuntu systems::
>
>     apt install swig python3-dev
>
> Testing:
> --------
>
> Build dts files and check using DT binding schema:
> $ make dtbs_check
>
> Optionally, DT_SCHEMA_FILES can be passed in with a schema file(s) to
> use for validation. This makes it easier to find and fix errors
> generated by a specific schema.
>
> Note, at this point dtbs_check is an optional build target as there are
> many warnings generated due to custom DT properties used by many
> platforms in u-boot. It is expected with these checks that compliance
> with DT bindings to take place. Once that's done it can be added to CI
> builds to remain compliant with DT bindings.
>
> Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
> ---
>
> Changes in v3:
> --------------
> - None
>
> Changes in v2:
> --------------
> - None
>
>  Makefile             | 20 ++++++++++++++++++--
>  scripts/Makefile.lib | 17 +++++++++++++++--
>  2 files changed, 33 insertions(+), 4 deletions(-)

Reviewed-by: Simon Glass <sjg at chromium.org>
Tested-by: Simon Glass <sjg at chromium.org>