linux-kernel - Re: [PATCH v3 4/8] dt-bindings: PCI: qcom-ep: consolidate DMA vs non-DMA usecases

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Message-ID: <20250222164730.kelz4csyvd46onyx@thinkpad>
Date: Sat, 22 Feb 2025 22:17:30 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Mrinmay Sarkar <quic_msarkar@...cinc.com>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 4/8] dt-bindings: PCI: qcom-ep: consolidate DMA vs
 non-DMA usecases

On Fri, Feb 21, 2025 at 05:52:02PM +0200, Dmitry Baryshkov wrote:
> On Qualcomm platforms here are two major kinds of PCIe EP controllers:
> ones which use eDMA and IOMMU and the ones which do not (like SDX55 /
> SDX65). It doesn't make sense to c&p similar properties all over the
> place. Merge these two usecases into a single conditional clause.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

- Mani

> ---
>  .../devicetree/bindings/pci/qcom,pcie-ep.yaml      | 68 +++++++++++-----------
>  1 file changed, 35 insertions(+), 33 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> index d22022ff2760c5aa84d31e3c719dd4b63adbb4cf..2c1918ca30dcfa8decea684ff6bfe11c602bbc7e 100644
> --- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> @@ -131,6 +131,7 @@ required:
>  
>  allOf:
>    - $ref: pci-ep.yaml#
> +
>    - if:
>        properties:
>          compatible:
> @@ -140,9 +141,43 @@ allOf:
>      then:
>        properties:
>          reg:
> +          minItems: 6
>            maxItems: 6
>          reg-names:
> +          minItems: 6
>            maxItems: 6
> +        interrupts:
> +          minItems: 2
> +          maxItems: 2
> +        interrupt-names:
> +          minItems: 2
> +          maxItems: 2
> +        iommus: false
> +    else:
> +      properties:
> +        reg:
> +          minItems: 7
> +          maxItems: 7
> +        reg-names:
> +          minItems: 7
> +          maxItems: 7
> +        interrupts:
> +          minItems: 3
> +          maxItems: 3
> +        interrupt-names:
> +          minItems: 3
> +          maxItems: 3
> +      required:
> +        - iommus
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,sdx55-pcie-ep
> +    then:
> +      properties:
>          clocks:
>            items:
>              - description: PCIe Auxiliary clock
> @@ -161,11 +196,6 @@ allOf:
>              - const: slave_q2a
>              - const: sleep
>              - const: ref
> -        interrupts:
> -          maxItems: 2
> -        interrupt-names:
> -          maxItems: 2
> -        iommus: false
>  
>    - if:
>        properties:
> @@ -175,12 +205,6 @@ allOf:
>                - qcom,sm8450-pcie-ep
>      then:
>        properties:
> -        reg:
> -          minItems: 7
> -          maxItems: 7
> -        reg-names:
> -          minItems: 7
> -          maxItems: 7
>          clocks:
>            items:
>              - description: PCIe Auxiliary clock
> @@ -201,14 +225,6 @@ allOf:
>              - const: ref
>              - const: ddrss_sf_tbu
>              - const: aggre_noc_axi
> -        interrupts:
> -          minItems: 3
> -          maxItems: 3
> -        interrupt-names:
> -          minItems: 3
> -          maxItems: 3
> -      required:
> -        - iommus
>  
>    - if:
>        properties:
> @@ -218,12 +234,6 @@ allOf:
>                - qcom,sa8775p-pcie-ep
>      then:
>        properties:
> -        reg:
> -          minItems: 7
> -          maxItems: 7
> -        reg-names:
> -          minItems: 7
> -          maxItems: 7
>          clocks:
>            items:
>              - description: PCIe Auxiliary clock
> @@ -238,14 +248,6 @@ allOf:
>              - const: bus_master
>              - const: bus_slave
>              - const: slave_q2a
> -        interrupts:
> -          minItems: 3
> -          maxItems: 3
> -        interrupt-names:
> -          minItems: 3
> -          maxItems: 3
> -      required:
> -        - iommus
>  
>  unevaluatedProperties: false
>  
> 
> -- 
> 2.39.5
> 

-- 
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