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Message-ID: <62770dc8-097e-9583-39fd-1a18ba2a8d13@quicinc.com>
Date:   Mon, 27 Nov 2023 10:36:52 +0800
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Subject: Re: [PATCH v2] dt-bindings: ufs: Add msi-parent for UFS MCQ
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To:     Bart Van Assche <bvanassche@acm.org>, <quic_asutoshd@quicinc.com>,
        <quic_cang@quicinc.com>, <mani@kernel.org>,
        <stanley.chu@mediatek.com>, <adrian.hunter@intel.com>,
        <beanhuo@micron.com>, <avri.altman@wdc.com>,
        <junwoo80.lee@samsung.com>, <martin.petersen@oracle.com>,
        <quic_nguyenb@quicinc.com>, <quic_nitirawa@quicinc.com>
CC:     <linux-scsi@vger.kernel.org>,
        Alim Akhtar <alim.akhtar@samsung.com>,
        "Rob Herring" <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Wolfram Sang <wsa@kernel.org>, Mark Brown <broonie@kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>
References: <1700629624-23571-1-git-send-email-quic_ziqichen@quicinc.com>
 <f9640827-4100-4ebf-8281-46f2d656540a@acm.org>
From:   Ziqi Chen <quic_ziqichen@quicinc.com>
In-Reply-To: <f9640827-4100-4ebf-8281-46f2d656540a@acm.org>
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On 11/23/2023 1:53 AM, Bart Van Assche wrote:
> 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?

No, the controllers that do not support MSI would NOT be impacted by 
this patch.

-Ziqi

> 
> Thanks,
> 
> Bart.