linux-kernel - Re: [PATCH 2/3] dt-bindings: PCI: qcom: Document msi-map and msi-map-mask properties

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Date:   Tue, 20 Dec 2022 11:29:01 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Cc:     bhelgaas@...gle.com, konrad.dybcio@...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 2/3] dt-bindings: PCI: qcom: Document msi-map and
 msi-map-mask properties

On 19/12/2022 20:14, Manivannan Sadhasivam wrote:
> The Qcom PCIe controller is capable of using either internal MSI controller
> or the external GIC-ITS for receiving the MSIs from endpoint devices.
> Currently, the binding only documents the internal MSI implementation.
> 
> Let's document the GIC-ITS imeplementation by making use of msi-map and
> msi-map-mask properties.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>  .../devicetree/bindings/pci/qcom,pcie.yaml       | 16 +++++++++++++---
>  1 file changed, 13 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> index 02450fb26bb9..24c3e7ef14eb 100644
> --- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> @@ -100,18 +100,28 @@ properties:
>      description: GPIO controlled connection to WAKE# signal
>      maxItems: 1
>  
> +  msi-map: true
> +
> +  msi-map-mask: true

You should not need these. Just like interrup-map-mask, it is coming
from pci-bus.yaml.


Best regards,
Krzysztof