[PATCH] spi: dt-bindings: mediatek,spi-mtk-nor: Add clock bindings for mt8189

[Rob Herring (Arm)]

On Thu, 05 Mar 2026 10:27:36 +0800, Meiker Gao wrote:
> Update mediatek,spi-mtk-nor.yaml to add conditional clock and
> clock-names bindings for the mt8189-nor platform. The mt8189-nor
> controller requires five specific clocks and corresponding clock-names
> ("spi", "sf", "axi_f", "axi_h", "axi_p"). This change enforces these
> requirements in the device tree binding schema.
> 
> For other platforms, the minimum number of clocks and clock-names
> remains unchanged. The patch also adds an example for mt8189-nor,
> illustrating the new clock configuration.
> 
> This update ensures correct hardware description and validation for
> mt8189-nor, improving compatibility and reducing configuration errors.
> 
> Signed-off-by: Meiker Gao <ot_meiker.gao at mediatek.com>
> 
> ---
>  .../bindings/spi/mediatek,spi-mtk-nor.yaml    | 78 ++++++++++++++++---
>  1 file changed, 68 insertions(+), 10 deletions(-)
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:
./Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml:20:1: [warning] too many blank lines (2 > 1) (empty-lines)

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml: allOf:1:else:properties:clock-names: {'minItems': 2, 'maxItems': 2, 'items': [{'const': 'spi'}, {'const': 'sf'}, {'const': 'axi'}, {'const': 'axi_s'}]} should not be valid under {'required': ['maxItems']}
	hint: "maxItems" is not needed with an "items" list
	from schema $id: http://devicetree.org/meta-schemas/items.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml: allOf:1:then:properties:clock-names: {'minItems': 5, 'maxItems': 5, 'items': [{'const': 'spi'}, {'const': 'sf'}, {'const': 'axi_f'}, {'const': 'axi_h'}, {'const': 'axi_p'}]} should not be valid under {'required': ['maxItems']}
	hint: "maxItems" is not needed with an "items" list
	from schema $id: http://devicetree.org/meta-schemas/items.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml: allOf:1:then:properties:clock-names: 'oneOf' conditional failed, one must be fixed:
	False schema does not allow 5
	[{'const': 'spi'}, {'const': 'sf'}, {'const': 'axi_f'}, {'const': 'axi_h'}, {'const': 'axi_p'}] is too long
	[{'const': 'spi'}, {'const': 'sf'}, {'const': 'axi_f'}, {'const': 'axi_h'}, {'const': 'axi_p'}] is too short
	1 was expected
	5 is greater than the maximum of 2
	5 is greater than the maximum of 3
	5 is greater than the maximum of 4
	hint: "minItems" is only needed if less than the "items" list length
	from schema $id: http://devicetree.org/meta-schemas/items.yaml
Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.example.dts:69:18: fatal error: dt-bindings/clock/mt8189-clk.h: No such file or directory
   69 |         #include <dt-bindings/clock/mt8189-clk.h>
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [scripts/Makefile.dtbs:140: Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.example.dtb] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/builds/robherring/dt-review-ci/linux/Makefile:1597: dt_binding_check] Error 2
make: *** [Makefile:248: __sub-make] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.kernel.org/project/devicetree/patch/20260305022740.2334033-1-ot_meiker.gao@mediatek.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

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 after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.