linux-kernel - Re: [PATCH v2 1/8] scsi: ufs: core: Pass target_freq to clk_scale

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Message-ID: <86425106b6756a45444e8f0479c7880cc78498ce.camel@gmail.com>
Date: Wed, 22 Jan 2025 15:08:40 +0100
From: Bean Huo <huobean@...il.com>
To: Ziqi Chen <quic_ziqichen@...cinc.com>, quic_cang@...cinc.com, 
 bvanassche@....org, 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>, Maramaina Naresh <quic_mnaresh@...cinc.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 v2 1/8] scsi: ufs: core: Pass target_freq to
 clk_scale_notify() vops

On Wed, 2025-01-22 at 18:02 +0800, Ziqi Chen wrote:
> From: Can Guo <quic_cang@...cinc.com>
> 
> 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 vops 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 vops to perform corresponding configurations with regard to the
> clock
> freqs.
> 
> Signed-off-by: Can Guo <quic_cang@...cinc.com>
> Co-developed-by: Ziqi Chen <quic_ziqichen@...cinc.com>
> Signed-off-by: Ziqi Chen <quic_ziqichen@...cinc.com>

Reviewed-by: Bean Huo <beanhuo@...ron.com>