Re: [PATCH v2 6/7] dt-bindings: PCI: intel,lgm-pcie: Make atu resource mandatory

[Rob Herring (Arm)]

On Mon, 30 Mar 2026 11:07:16 +0200, Florian Eckert wrote:
> The ATU information is already set in the dwc core if it is specified in
> the DTS. The driver uses its own value here [1]. This information is
> hardware specific and should therefore be maintained in the DTS rather
> than in the source.
> 
> Backwards compatibility is not an issue here [5], as the driver is
> exclusively used by Maxlinear.
> 
> Old DTS entry for PCIe:
> 
> reg = <0xd1000000 0x1000>,
>       <0xd3000000 0x20000>,
>       <0xd0c41000.0x1000>;
> reg-names = "dbi", "config", "app";
> 
> New DTS entry for PCIe:
> 
> reg = <0xd1000000 0x1000>,
>       <0xd10c0000 0x1000>,
>       <0xd3000000 0x20000>,
>      <0xd0c41000.0x1000>;
> reg-names = "dbi", "atu", "config", "app";
> 
> [1] https://elixir.bootlin.com/linux/v6.19.10/source/drivers/pci/controller/dwc/pcie-intel-gw.c#L301
> [2] https://lore.kernel.org/all/BY3PR19MB507667CE7531D863E1E5F8AEBDD82@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
> 
> Signed-off-by: Florian Eckert <fe@xxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/pci/intel-gw-pcie.yaml | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 

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

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Lexical error: Documentation/devicetree/bindings/pci/intel-gw-pcie.example.dts:28.37-43 Unexpected 'config'
Error: Documentation/devicetree/bindings/pci/intel-gw-pcie.example.dts:28.37-43 syntax error
FATAL ERROR: Unable to parse input tree
make[2]: *** [scripts/Makefile.dtbs:140: Documentation/devicetree/bindings/pci/intel-gw-pcie.example.dtb] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/builds/robherring/dt-review-ci/linux/Makefile:1601: 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/20260330-pcie-intel-gw-v2-6-8bd07367a298@xxxxxxxxxx

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.