On Thu, 23 Jun 2022 12:53:59 +0200, Krzysztof Kozlowski wrote:
> The top level qcom,msm-id and qcom,board-id properties are utilized by
> bootloaders on Qualcomm MSM platforms to determine which device tree
> should be used and passed to the kernel.
>
> The commit b32e592d3c28 ("devicetree: bindings: Document qcom board
> compatible format") from 2015 was a consensus during discussion about
> upstreaming qcom,msm-id and qcom,board-id fields. There are however still
> problems with that consensus:
> 1. It was reached 7 years ago but it turned out its implementation did
> not reach all possible products.
>
> 2. Initially additional tool (dtbTool) was needed for parsing these
> fields to create a QCDT image consisting of multiple DTBs, later the
> bootloaders were improved and they use these qcom,msm-id and
> qcom,board-id properties directly.
>
> 3. Extracting relevant information from the board compatible requires
> this additional tool (dtbTool), which makes the build process more
> complicated and not easily reproducible (DTBs are modified after the
> kernel build).
>
> 4. Some versions of Qualcomm bootloaders expect these properties even
> when booting with a single DTB. The community is stuck with these
> bootloaders thus they require properties in the DTBs.
>
> Since several upstreamed Qualcomm SoC-based boards require these
> properties to properly boot and the properties are reportedly used by
> bootloaders, document them.
>
> Link: https://lore.kernel.org/r/a3c932d1-a102-ce18-deea-18cbbd05ecab@xxxxxxxxxx/
> Co-developed-by: Kumar Gala <galak@xxxxxxxxxxxxxx>
> Signed-off-by: Kumar Gala <galak@xxxxxxxxxxxxxx>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> ---
> .../devicetree/bindings/arm/qcom.yaml | 121 +++++++++++++++
> include/dt-bindings/arm/qcom,ids.h | 146 ++++++++++++++++++
> 2 files changed, 267 insertions(+)
> create mode 100644 include/dt-bindings/arm/qcom,ids.h
>
My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):
yamllint warnings/errors:
dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/arm/qcom.yaml: properties:qcom,board-id:items: 'oneOf' conditional failed, one must be fixed:
{'oneOf': [{'maxItems': 2, 'items': [{'description': 'Board ID consisting of three bitfields::\n - bits 31-24 - Unused\n - bits 23-16 - Platform Version Major\n - bits 15-8 - Platform Version Minor\n - bits 7-0 - Platform Type\nPlatform Type field is an exact match value. The\nPlatform Major/Minor field is a best match. The bootloader will\nlook for the closest possible match.\n'}, {'description': 'Subtype ID unique to a Platform Type/Chipset ID. For a given\nPlatform Type, there will typically only be a single board and the\nsubtype_id will be 0. However in some cases board variants may\nneed to be distinguished by different subtype_id values.\n'}]}, {'minItems': 4, 'items': [{'const': 8}, {'const': 0}, {'description': 'OnePlus board ID'}, {'description': 'OnePlus subtype ID'}]}]} is not of type 'array'
{'maxItems': 2, 'items': [{'description': 'Board ID consisting of three bitfields::\n - bits 31-24 - Unused\n - bits 23-16 - Platform Version Major\n - bits 15-8 - Platform Version Minor\n - bits 7-0 - Platform Type\nPlatform Type field is an exact match value. The\nPlatform Major/Minor field is a best match. The bootloader will\nlook for the closest possible match.\n'}, {'description': 'Subtype ID unique to a Platform Type/Chipset ID. For a given\nPlatform Type, there will typically only be a single board and the\nsubtype_id will be 0. However in some cases board variants may\nneed to be distinguished by different subtype_id values.\n'}]} should not be valid under {'required': ['maxItems']}
hint: "maxItems" is not needed with an "items" list
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/arm/qcom.yaml: properties:qcom,board-id:items:oneOf:1: 'oneOf' conditional failed, one must be fixed:
[{'const': 8}, {'const': 0}, {'description': 'OnePlus board ID'}, {'description': 'OnePlus subtype ID'}] is too long
[{'const': 8}, {'const': 0}, {'description': 'OnePlus board ID'}, {'description': 'OnePlus subtype ID'}] is too short
False schema does not allow 4
1 was expected
4 is greater than the maximum of 2
4 is greater than the maximum of 3
hint: "minItems" is only needed if less than the "items" list length
from schema $id: http://devicetree.org/meta-schemas/items.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/arm/qcom.yaml: properties:qcom,board-id:items:oneOf:1: 'oneOf' conditional failed, one must be fixed:
[{'const': 8}, {'const': 0}, {'description': 'OnePlus board ID'}, {'description': 'OnePlus subtype ID'}] is too long
[{'const': 8}, {'const': 0}, {'description': 'OnePlus board ID'}, {'description': 'OnePlus subtype ID'}] is too short
False schema does not allow 4
1 was expected
4 is greater than the maximum of 2
4 is greater than the maximum of 3
hint: "minItems" is only needed if less than the "items" list length
from schema $id: http://devicetree.org/meta-schemas/items.yaml#
from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/arm/qcom.yaml: ignoring, error in schema: properties: qcom,board-id: items
Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb:0:0: /: failed to match any schema with compatible: ['arrow,apq8096-db820c', 'qcom,apq8096-sbc', 'qcom,apq8096']
Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb:0:0: /: failed to match any schema with compatible: ['arrow,apq8096-db820c', 'qcom,apq8096-sbc', 'qcom,apq8096']
Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.example.dtb:0:0: /: failed to match any schema with compatible: ['arrow,apq8096-db820c', 'qcom,apq8096-sbc', 'qcom,apq8096']
doc reference errors (make refcheckdocs):
See https://patchwork.ozlabs.org/patch/
This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.
If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:
pip3 install dtschema --upgrade
Please check and re-submit.
