Re: [PATCH v27 2/4] dt-bindings: i2c: ast2600-i2c.yaml: Add global-regs and transfer-mode properties

Rob Herring (Arm)
2026-03-25T01:46:15Z

On Tue, 24 Mar 2026 11:06:27 +0800, Ryan Chen wrote:
> The AST2600 I2C controller supports three transfer modes (byte, buffer,
> DMA). Add "aspeed,transfer-mode" so DT can select the preferred transfer
> method per controller instance. Also add the "aspeed,global-regs"
> phandle to reference the AST2600 global registers syscon/regmap used by
> the controller.
>
> These properties apply only to the AST2600 binding and are not part of
> the legacy binding, which uses a mixed controller/target register layout
> and does not have the split register blocks or these new configuration
> registers. Legacy DTs remain unchanged.
>
> Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
> ---
> Changes in v27:
> - change aspeed,transfer-mode to aspeed,enable-dma.
> ---
> .../devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml | 17 +++++++++++++++++
> 1 file changed, 17 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/i2c/aspeed,ast2600-i2c.example.dtb: i2c@80 (aspeed,ast2600-i2c-bus): Unevaluated properties are not allowed ('aspeed,transfer-mode' was unexpected)
from schema $id: http://devicetree.org/schemas/i2c/aspeed,ast2600-i2c.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.kernel.org/project/devicetree/patch/20260324-upstream_i2c-v27-2-f19b511c8c28@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.