From: Rob Herring <robh@kernel.org>
To: Ziqi Chen <quic_ziqichen@quicinc.com>
Cc: quic_asutoshd@quicinc.com, quic_cang@quicinc.com,
bvanassche@acm.org, mani@kernel.org, beanhuo@micron.com,
avri.altman@wdc.com, junwoo80.lee@samsung.com,
martin.petersen@oracle.com, quic_nguyenb@quicinc.com,
quic_nitirawa@quicinc.com, quic_rampraka@quicinc.com,
linux-scsi@vger.kernel.org, Alim Akhtar <alim.akhtar@samsung.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Wolfram Sang <wsa@kernel.org>, Guenter Roeck <linux@roeck-us.net>,
Miquel Raynal <miquel.raynal@bootlin.com>,
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>
Subject: Re: [PATCH] dt-bindings: ufs: Add msi-parent for UFS MCQ
Date: Mon, 6 Nov 2023 08:48:31 -0600 [thread overview]
Message-ID: <20231106144831.GA317907-robh@kernel.org> (raw)
In-Reply-To: <1698835699-28550-1-git-send-email-quic_ziqichen@quicinc.com>
On Wed, Nov 01, 2023 at 06:48:13PM +0800, Ziqi Chen wrote:
> The Message Signaled Interrupts (MSI) has been introduced
> to UFS driver since the MCQ be enabled.
Not really relevant when a driver supported MSI, but the when the h/w
did. Has UFS always supported MSI? It was added in some version of the
spec?
> Hence in UFS DT
> node we need to give the msi-parent property that point
> to the hardware entity which serves as the MSI controller
> for this UFS controller.
>
> Signed-off-by: Ziqi Chen <quic_ziqichen@quicinc.com>
> ---
> Documentation/devicetree/bindings/ufs/ufs-common.yaml | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/ufs/ufs-common.yaml b/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> index bbaee4f5..42309bb 100644
> --- a/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> +++ b/Documentation/devicetree/bindings/ufs/ufs-common.yaml
> @@ -73,6 +73,8 @@ properties:
> description:
> Specifies max. load that can be drawn from VCCQ2 supply.
>
> + msi-parent: true
> +
> dependencies:
> freq-table-hz: [ clocks ]
>
> --
> 2.7.4
>
next prev parent reply other threads:[~2023-11-06 14:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-01 10:48 [PATCH] dt-bindings: ufs: Add msi-parent for UFS MCQ Ziqi Chen
2023-11-06 14:48 ` Rob Herring [this message]
2023-11-06 17:56 ` Bart Van Assche
2023-11-09 10:51 ` Ziqi Chen
2023-11-09 13:55 ` Rob Herring
2023-11-09 16:16 ` Manivannan Sadhasivam
2023-11-10 5:50 ` Ziqi Chen
2023-11-21 9:26 ` Krzysztof Kozlowski
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