linux-kernel - Re: [PATCH v3 5/8] scsi: ufs: core: Enable multi-level gear scaling

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Message-ID: <f551c5ce-5f9c-4893-8de5-d646145eb0e7@acm.org>
Date: Wed, 5 Feb 2025 10:04:39 -0800
From: Bart Van Assche <bvanassche@....org>
To: Ziqi Chen <quic_ziqichen@...cinc.com>, quic_cang@...cinc.com,
 mani@...nel.org, beanhuo@...ron.com, avri.altman@....com,
 junwoo80.lee@...sung.com, martin.petersen@...cle.com,
 quic_nguyenb@...cinc.com, quic_nitirawa@...cinc.com,
 quic_rampraka@...cinc.com
Cc: linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org,
 Alim Akhtar <alim.akhtar@...sung.com>,
 "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
 Peter Wang <peter.wang@...iatek.com>,
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
 Andrew Halaney <ahalaney@...hat.com>,
 open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 5/8] scsi: ufs: core: Enable multi-level gear scaling

On 2/3/25 12:11 AM, Ziqi Chen wrote:
> With OPP V2 enabled, devfreq can scale clocks amongst multiple frequency
> plans. However, the gear speed is only toggled between min and max during
> clock scaling. Enable multi-level gear scaling by mapping clock frequencies
> to gear speeds, so that when devfreq scales clock frequencies we can put
> the UFS link at the appropraite gear speeds accordingly.

Reviewed-by: Bart Van Assche <bvanassche@....org>