linux-kernel - Re: [PATCH v2] dt-bindings: ufs: Add msi-parent for UFS MCQ

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Message-ID: <f9640827-4100-4ebf-8281-46f2d656540a@acm.org>
Date:   Wed, 22 Nov 2023 09:53:53 -0800
From:   Bart Van Assche <bvanassche@....org>
To:     Ziqi Chen <quic_ziqichen@...cinc.com>, quic_asutoshd@...cinc.com,
        quic_cang@...cinc.com, mani@...nel.org, stanley.chu@...iatek.com,
        adrian.hunter@...el.com, beanhuo@...ron.com, avri.altman@....com,
        junwoo80.lee@...sung.com, martin.petersen@...cle.com,
        quic_nguyenb@...cinc.com, quic_nitirawa@...cinc.com
Cc:     linux-scsi@...r.kernel.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>,
        Guenter Roeck <linux@...ck-us.net>,
        Wolfram Sang <wsa@...nel.org>, Mark Brown <broonie@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] dt-bindings: ufs: Add msi-parent for UFS MCQ

On 11/21/23 21:06, Ziqi Chen wrote:
> diff --git a/Documentation/devicetree/bindings/ufs/ufs-common.yaml b/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> index 985ea8f..31fe7f3 100644
> --- a/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> +++ b/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> @@ -87,6 +87,8 @@ properties:
>       description:
>         Specifies max. load that can be drawn from VCCQ2 supply.
>   
> +  msi-parent: true
> +
>   dependencies:
>     freq-table-hz: [ clocks ]
>     operating-points-v2: [ clocks, clock-names ]

Does this patch break support for UFSHCI 4.0 controllers that do not support MSI?

Thanks,

Bart.