From: Bart Van Assche <bvanassche@acm.org>
To: Rob Herring <robh@kernel.org>, Ziqi Chen <quic_ziqichen@quicinc.com>
Cc: quic_asutoshd@quicinc.com, quic_cang@quicinc.com,
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 09:56:23 -0800 [thread overview]
Message-ID: <5850d5ac-e735-4358-866d-f410b00ba39d@acm.org> (raw)
In-Reply-To: <20231106144831.GA317907-robh@kernel.org>
On 11/6/23 06:48, Rob Herring wrote:
> 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?
MSI support has been introduced in UFSHCI version 4.0 and I think that
the controller vendor can decide whether or not to implement MSI. Does
this mean that the patch needs to be improved?
Thanks,
Bart.
next prev parent reply other threads:[~2023-11-06 17:56 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
2023-11-06 17:56 ` Bart Van Assche [this message]
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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