Re: [PATCH/RFC] dt-bindings: pci: rcar-pci-ep: Document missing interrupts property

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Hi Geert,

Thank you for the patch.

On Thu, Nov 26, 2020 at 2:21 PM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
>
> The R-Car PCIe controller does not use interrupts when configured
> for endpoint mode, hence the bindings do not document the interrupt
> property.  However, all DTS files provide interrupts properties, and
> thus fail to validate.
>
> Fix this by documenting the interrupts property.
>
> Fixes: 5be478f9c24fbdf8 ("dt-bindings: Another round of adding missing 'additionalProperties'")
> Fixes: 4c0f80920923f103 ("dt-bindings: PCI: rcar: Add bindings for R-Car PCIe endpoint controller")
> Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> ---
> Alternatively, the interrupts properties should be removed from the
> corresponding device nodes in the DTS files.  Obviously they should be
> retained in the device nodes representing PCIe controllers configured in
> host mode, which describe the same hardware...
> ---
>  Documentation/devicetree/bindings/pci/rcar-pci-ep.yaml | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Cheers,
Prabhakar

> diff --git a/Documentation/devicetree/bindings/pci/rcar-pci-ep.yaml b/Documentation/devicetree/bindings/pci/rcar-pci-ep.yaml
> index fb97f4ea0e63682b..32a3b7665ff5473c 100644
> --- a/Documentation/devicetree/bindings/pci/rcar-pci-ep.yaml
> +++ b/Documentation/devicetree/bindings/pci/rcar-pci-ep.yaml
> @@ -33,6 +33,10 @@ properties:
>        - const: memory2
>        - const: memory3
>
> +  interrupts:
> +    minItems: 3
> +    maxItems: 3
> +
>    power-domains:
>      maxItems: 1
>
> @@ -54,6 +58,7 @@ required:
>    - compatible
>    - reg
>    - reg-names
> +  - interrupts
>    - resets
>    - power-domains
>    - clocks
> @@ -65,6 +70,7 @@ additionalProperties: false
>  examples:
>    - |
>      #include <dt-bindings/clock/r8a774c0-cpg-mssr.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>      #include <dt-bindings/power/r8a774c0-sysc.h>
>
>       pcie0_ep: pcie-ep@fe000000 {
> @@ -76,6 +82,9 @@ examples:
>                    <0x30000000 0x8000000>,
>                    <0x38000000 0x8000000>;
>              reg-names = "apb-base", "memory0", "memory1", "memory2", "memory3";
> +            interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>,
> +                         <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
> +                         <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>;
>              resets = <&cpg 319>;
>              power-domains = <&sysc R8A774C0_PD_ALWAYS_ON>;
>              clocks = <&cpg CPG_MOD 319>;
> --
> 2.25.1
>



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