From: "Peter Wang (王信友)" <peter.wang@mediatek.com>
To: "beanhuo@micron.com" <beanhuo@micron.com>,
"mani@kernel.org" <mani@kernel.org>,
"can.guo@oss.qualcomm.com" <can.guo@oss.qualcomm.com>,
"avri.altman@wdc.com" <avri.altman@wdc.com>,
"bvanassche@acm.org" <bvanassche@acm.org>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>
Cc: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"vamshigajjela@google.com" <vamshigajjela@google.com>,
"rafael.j.wysocki@intel.com" <rafael.j.wysocki@intel.com>,
"alim.akhtar@samsung.com" <alim.akhtar@samsung.com>,
"James.Bottomley@HansenPartnership.com"
<James.Bottomley@HansenPartnership.com>,
"adrian.hunter@intel.com" <adrian.hunter@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 2/2] scsi: ufs: core: Add support to retrieve and store TX Equalization settings
Date: Mon, 27 Apr 2026 07:02:32 +0000 [thread overview]
Message-ID: <39639798e11b3b1b6366ed2e7a42ab91c8840761.camel@mediatek.com> (raw)
In-Reply-To: <20260424151420.111675-3-can.guo@oss.qualcomm.com>
On Fri, 2026-04-24 at 08:14 -0700, Can Guo wrote:
> Add support for UFS v5.0 JEDEC attributes qTxEQGnSettings and
> wTxEQGnSettingsExt to enable persistent storage and retrieval of
> optimal TX Equalization settings.
>
> This provides a fast-path for TX Equalization by reusing previously
> stored optimal settings, avoiding TX Equalization Training (EQTR)
> procedures during subsequent Power Mode changes.
>
> When no valid TX Equalization settings are found, fall back to full
> TX
> EQTR procedures and optionally save the results for future use.
>
> The validity of one set of TX Equalization settings is indicated by
> Bit[15] in wTxEQGnSettingsExt.
>
> Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
next prev parent reply other threads:[~2026-04-27 7:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260424151420.111675-1-can.guo@oss.qualcomm.com>
2026-04-24 15:14 ` [PATCH v2 1/2] scsi: ufs: core: Introduce function ufshcd_query_attr_qword() Can Guo
2026-04-27 8:36 ` Bean Huo
2026-04-24 15:14 ` [PATCH v2 2/2] scsi: ufs: core: Add support to retrieve and store TX Equalization settings Can Guo
2026-04-27 7:02 ` Peter Wang (王信友) [this message]
2026-04-27 8:37 ` Bean Huo
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