linux-kernel - Re: [PATCH v2 2/4] dt-bindings: ufs: mediatek,ufs: add ufs-disable-mcq flag for UFS host

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Message-ID: <4241894298ef926736fbf25fe6b2a3f51197f001.camel@mediatek.com>
Date: Wed, 23 Jul 2025 09:33:59 +0000
From: Peter Wang (王信友) <peter.wang@...iatek.com>
To: "chu.stanley@...il.com" <chu.stanley@...il.com>, "robh@...nel.org"
	<robh@...nel.org>, "James.Bottomley@...senPartnership.com"
	<James.Bottomley@...senPartnership.com>, "bvanassche@....org"
	<bvanassche@....org>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, "linux-scsi@...r.kernel.org"
	<linux-scsi@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, Macpaul Lin (林智斌)
	<Macpaul.Lin@...iatek.com>, "conor+dt@...nel.org" <conor+dt@...nel.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"krzk+dt@...nel.org" <krzk+dt@...nel.org>, "alim.akhtar@...sung.com"
	<alim.akhtar@...sung.com>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "matthias.bgg@...il.com"
	<matthias.bgg@...il.com>, "avri.altman@....com" <avri.altman@....com>,
	"martin.petersen@...cle.com" <martin.petersen@...cle.com>
CC: "macpaul@...il.com" <macpaul@...il.com>, "stable@...r.kernel.org"
	<stable@...r.kernel.org>, Pablo Sun (孫毓翔)
	<pablo.sun@...iatek.com>, Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>,
	Bear Wang (萩原惟德) <bear.wang@...iatek.com>,
	Ramax Lo (羅明遠) <Ramax.Lo@...iatek.com>
Subject: Re: [PATCH v2 2/4] dt-bindings: ufs: mediatek,ufs: add
 ufs-disable-mcq flag for UFS host

On Tue, 2025-07-22 at 16:57 +0800, Macpaul Lin wrote:
> Add the 'mediatek,ufs-disable-mcq' property to the UFS device-tree
> bindings. This flag corresponds to the UFS_MTK_CAP_DISABLE_MCQ host
> capability recently introduced in the UFS host driver, allowing it
> to disable the Multiple Circular Queue (MCQ) feature when present.
> The binding schema has also been updated to resolve DTBS check
> errors.
> 
> Cc: stable@...r.kernel.org
> Fixes: 46bd3e31d74b ("scsi: ufs: mediatek: Add
> UFS_MTK_CAP_DISABLE_MCQ")
> Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
> ---
>  Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> Changes for v2:
>  - Split new property from the origin patch.
>  - Add dependency description. Since the code in ufs-mediatek.c
>    has been backport to stable tree. The dt-bindings should be
> backport
>    to the same stable tree as well.
> 
> diff --git a/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
> b/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
> index 32fd535a514a..20f341d25ebc 100644
> --- a/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
> +++ b/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
> @@ -33,6 +33,10 @@ properties:
>  
>    vcc-supply: true
>  
> +  mediatek,ufs-disable-mcq:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description: The mask to disable MCQ (Multi-Circular Queue) for
> UFS host.
> +
>  required:
>    - compatible
>    - clocks

Reviewed-by: Peter Wang <peter.wang@...iatek.com>