linux-kernel - Re: [PATCH v3 1/8] scsi: ufs: core: Pass target_freq to clk_scale

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Message-ID: <45a2da01-966f-4019-8d7f-ee2b66575804@acm.org>
Date: Wed, 5 Feb 2025 10:02:42 -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>, Stanley Jhu <chu.stanley@...il.com>,
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
 Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Andrew Halaney <ahalaney@...hat.com>, Eric Biggers <ebiggers@...gle.com>,
 Minwoo Im <minwoo.im@...sung.com>, open list <linux-kernel@...r.kernel.org>,
 "moderated list:UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER..."
 <linux-mediatek@...ts.infradead.org>,
 "moderated list:ARM/Mediatek SoC support:Keyword:mediatek"
 <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 1/8] scsi: ufs: core: Pass target_freq to
 clk_scale_notify() vop

On 2/3/25 12:11 AM, Ziqi Chen wrote:
> Instead of only two frequencies, if OPP V2 is used, the UFS devfreq clock
> scaling may scale the clock among multiple frequencies, so just passing
> up/down to vop clk_scale_notify() is not enough to cover the intermediate
> clock freqs between the min and max freqs. Hence pass the target_freq ,
> which will be used in successive commits, to clk_scale_notify() to allow
> the vop to perform corresponding configurations with regard to the clock
> freqs.

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