[PATCH v3 2/3] dt-bindings: pinctrl: aspeed: Add support for AST27xx

[Rob Herring (Arm)]

On Tue, 20 Jan 2026 19:43:06 +0800, Billy Tsai wrote:
> Add bindings for the pin controller found in ASPEED AST27xx SoCs.
> 
> The AST2700 SoC consists of two interconnected SoC instances, each
> with its own pin controller register block managed by a separate
> System Control Unit (SCU).
> 
> Introduce the "aspeed,ast2700-soc0-pinctrl" compatible string to
> describe the SoC0 pin controller, which is not compatible with
> existing ASPEED pinctrl bindings.
> 
> The SoC1 pin controller follows a regular and predictable register
> layout and can be described using an existing generic pinctrl
> binding, therefore no dedicated AST2700-specific compatible string
> is introduced for it.
> 
> Signed-off-by: Billy Tsai <billy_tsai at aspeedtech.com>
> ---
>  .../bindings/mfd/aspeed,ast2x00-scu.yaml           |  27 +++++
>  .../pinctrl/aspeed,ast2700-soc0-pinctrl.yaml       | 130 +++++++++++++++++++++
>  2 files changed, 157 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/pinctrl/aspeed,ast2700-soc0-pinctrl.yaml: patternProperties:-state$: 'anyOf' conditional failed, one must be fixed:
	'pins' is not one of ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'dependentRequired', 'dependentSchemas', 'deprecated', 'description', 'else', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'items', 'if', 'minItems', 'minimum', 'maxItems', 'maximum', 'multipleOf', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'required', 'then', 'typeSize', 'unevaluatedProperties', 'uniqueItems']
	'type' was expected
	from schema $id: http://devicetree.org/meta-schemas/keywords.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc0-pinctrl.yaml: patternProperties:-state$: 'anyOf' conditional failed, one must be fixed:
	'drive-strength' is not one of ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'dependentRequired', 'dependentSchemas', 'deprecated', 'description', 'else', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'items', 'if', 'minItems', 'minimum', 'maxItems', 'maximum', 'multipleOf', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'required', 'then', 'typeSize', 'unevaluatedProperties', 'uniqueItems']
	'type' was expected
	from schema $id: http://devicetree.org/meta-schemas/keywords.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc0-pinctrl.yaml: patternProperties:-state$: 'pins' is not one of ['type', 'description', 'dependencies', 'dependentRequired', 'dependentSchemas', 'properties', 'patternProperties', 'additionalProperties', 'unevaluatedProperties', 'deprecated', 'required', 'not', 'if', 'else', 'then', 'allOf', 'anyOf', 'oneOf', '$ref']
	from schema $id: http://devicetree.org/meta-schemas/nodes.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc0-pinctrl.yaml: patternProperties:-state$: 'drive-strength' is not one of ['type', 'description', 'dependencies', 'dependentRequired', 'dependentSchemas', 'properties', 'patternProperties', 'additionalProperties', 'unevaluatedProperties', 'deprecated', 'required', 'not', 'if', 'else', 'then', 'allOf', 'anyOf', 'oneOf', '$ref']
	from schema $id: http://devicetree.org/meta-schemas/nodes.yaml
Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.example.dts:63.13-50: Warning (ranges_format): /example-1/syscon at 12c02000:ranges: "ranges" property has invalid length (16 bytes) (parent #address-cells == 1, child #address-cells == 1, #size-cells == 1)
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.example.dtb: syscon at 12c02000 (aspeed,ast2700-scu0): reg: [[0, 314580992], [0, 4096]] is too long
	from schema $id: http://devicetree.org/schemas/mfd/aspeed,ast2x00-scu.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.example.dtb: pinctrl at 400 (aspeed,ast2700-soc0-pinctrl): 'reg' does not match any of the regexes: '-state$', '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/pinctrl/aspeed,ast2700-soc0-pinctrl.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.example.dtb: pinctrl at 400 (aspeed,ast2700-soc0-pinctrl): emmcclk-driving-state: 'drive-strength', 'pins' do not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/pinctrl/aspeed,ast2700-soc0-pinctrl.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.kernel.org/project/devicetree/patch/20260120-upstream_pinctrl-v3-2-868fbf8413b5@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.