linux-kernel - Re: [PATCH] dt-bindings: ufs: qcom: Add msi-parent for UFS MCQ

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Message-ID: <20231101050116.GB2897@thinkpad>
Date:   Wed, 1 Nov 2023 10:31:16 +0530
From:   Manivannan Sadhasivam <mani@...nel.org>
To:     Ziqi Chen <quic_ziqichen@...cinc.com>
Cc:     quic_asutoshd@...cinc.com, quic_cang@...cinc.com,
        bvanassche@....org, beanhuo@...ron.com, avri.altman@....com,
        junwoo80.lee@...sung.com, martin.petersen@...cle.com,
        quic_nguyenb@...cinc.com, quic_nitirawa@...cinc.com,
        quic_rampraka@...cinc.com, linux-scsi@...r.kernel.org,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: ufs: qcom: Add msi-parent for UFS MCQ

On Wed, Nov 01, 2023 at 12:01:09PM +0800, Ziqi Chen wrote:
> The Message Signaled Interrupt (MSI) has been used
> by UFS driver since the MCQ be enabled. Hence in UFS
> DT node, we need to give the msi-parent property that
> point to the hardware entity that serves as the MSI
> controller for this UFS controller.
> 
> Signed-off-by: Ziqi Chen <quic_ziqichen@...cinc.com>
> ---
>  Documentation/devicetree/bindings/ufs/qcom,ufs.yaml | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml b/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
> index 462ead5..d2f505a 100644
> --- a/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
> +++ b/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml
> @@ -103,6 +103,8 @@ properties:
>      description:
>        GPIO connected to the RESET pin of the UFS memory device.
>  
> +  msi-parent: true
> +

This property is not Qcom specific. So this should be part of ufs-common.yaml.

- Mani

>  required:
>    - compatible
>    - reg
> @@ -318,5 +320,6 @@ examples:
>                              <0 0>,
>                              <0 0>;
>              qcom,ice = <&ice>;
> +            msi-parent = <&gic_its 0x60>;
>          };
>      };
> -- 
> 2.7.4
> 

-- 
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