linux-kernel - Re: [PATCH v3 3/8] scsi: ufs: core: Add a vop to map clock frequency to gear speed

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Message-ID: <8eb1563d-b2a4-41e5-ace1-7632cdf71d30@acm.org>
Date: Wed, 5 Feb 2025 10:03:26 -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>,
 Eric Biggers <ebiggers@...gle.com>, Minwoo Im <minwoo.im@...sung.com>,
 open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 3/8] scsi: ufs: core: Add a vop to map clock frequency
 to gear speed

On 2/3/25 12:11 AM, Ziqi Chen wrote:
> Add a vop to map UFS host controller clock frequencies to the maximum
> supported UFS high speed gear speeds. During clock scaling, we can map the
> target clock frequency, demanded by devfreq, to the maximum supported gear
> speed, so that devfreq can scale the gear to the highest gear speed
> supported at the target clock frequency, instead of just scaling up/down
> the gear between the min and max gear speeds.

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