[PATCH v6 2/3] dt-bindings: mfd: aspeed,ast2x00-scu: Describe AST2700 SCU0

[Rob Herring (Arm)]

On Tue, 14 Apr 2026 17:39:00 +0800, Billy Tsai wrote:
> AST2700 consists of two interconnected SoC instances, each with its own
> System Control Unit (SCU). The SCU0 provides pin control, interrupt
> controllers, clocks, resets, and address-space mappings for the
> Secondary and Tertiary Service Processors (SSP and TSP).
> 
> Describe the SSP/TSP address mappings using the standard
> memory-region and memory-region-names properties.
> 
> Disallow legacy child nodes that are not present on AST2700, including
> p2a-control and smp-memram. The latter is unnecessary as software can
> access the scratch registers via the SCU syscon.
> 
> Also allow the AST2700 SoC0 pin controller to be described as a child
> node of the SCU0, and add an example illustrating the SCU0 layout,
> including reserved-memory, interrupt controllers, and pinctrl.
> 
> Signed-off-by: Billy Tsai <billy_tsai at aspeedtech.com>
> ---
>  .../bindings/mfd/aspeed,ast2x00-scu.yaml           | 112 +++++++++++++++++++++
>  1 file changed, 112 insertions(+)
> 

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

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml: allOf:1: 'then' is a dependency of 'if'
	hint: Keywords must be a subset of known json-schema keywords
	from schema $id: http://devicetree.org/meta-schemas/keywords.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml: allOf:1: 'then' is a dependency of 'else'
	hint: Keywords must be a subset of known json-schema keywords
	from schema $id: http://devicetree.org/meta-schemas/keywords.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.kernel.org/project/devicetree/patch/20260414-upstream_pinctrl-v6-2-709f2127da33@aspeedtech.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.