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>,
"bvanassche@acm.org" <bvanassche@acm.org>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>
Cc: "avri.altman@wdc.com" <avri.altman@wdc.com>,
"zhml@posteo.com" <zhml@posteo.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"robh@kernel.org" <robh@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"krzk+dt@kernel.org" <krzk+dt@kernel.org>,
"alim.akhtar@samsung.com" <alim.akhtar@samsung.com>,
"quic_rdwivedi@quicinc.com" <quic_rdwivedi@quicinc.com>,
"conor+dt@kernel.org" <conor+dt@kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: Re: [PATCH v5 1/2] dt-bindings: ufs: Document static TX Equalization settings properties
Date: Fri, 29 May 2026 07:45:20 +0000 [thread overview]
Message-ID: <501287b3891c9be481cc7201a1c9478c73f9825d.camel@mediatek.com> (raw)
In-Reply-To: <20260529011421.462046-2-can.guo@oss.qualcomm.com>
On Thu, 2026-05-28 at 18:14 -0700, Can Guo wrote:
> UFS v5.0/UFSHCI v5.0 add HS-G6 support (46.6 Gbps/lane) via UniPro
> v3.0
> and M-PHY v6.0. In these specs, TX Equalization is defined for all
> High
> Speed Gears (not only HS-G6) to compensate channel loss and improve
> signal
> integrity at high speed operation.
>
> For HS-G6, M-PHY uses PAM4 1b1b line coding, Pre-Coding may also be
> required depending on channel characteristics.
>
> Add vendor-neutral DT properties:
>
> - patternProperties for txeq-preshoot-g[1-6] and txeq-deemphasis-g[1-
> 6]
> - fixed property tx-precode-enable-g6
>
> Each property is a uint32 array of per-lane tuples:
> <Host_Lane0 Device_Lane0>, [<Host_Lane1 Device_Lane1>]
>
> Accept 2 or 4 values (x1/x2 lane configs). PreShoot and DeEmphasis
> values
> are 0..7. Precode enable values are 0/1 and only applicable to HS-G6.
>
> Acked-by: Manivannan Sadhasivam <mani@kernel.org>
> Reviewed-by: Bean Huo <beanhuo@micron.com>
> Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
> ---
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
next prev parent reply other threads:[~2026-05-29 7:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260529011421.462046-1-can.guo@oss.qualcomm.com>
2026-05-29 1:14 ` Can Guo
2026-05-29 7:45 ` Peter Wang (王信友) [this message]
2026-05-29 1:14 ` [PATCH v5 2/2] scsi: ufs: core: Add support for static TX Equalization settings Can Guo
2026-05-29 8:04 ` Peter Wang (王信友)
2026-05-29 8:12 ` Can Guo
2026-05-29 8:40 ` Peter Wang (王信友)
2026-05-29 8:42 ` Can Guo
2026-05-29 10:19 ` Bean Huo
2026-05-29 10:21 ` Can Guo
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