linux-kernel - Re: [PATCH V6 4/6] scsi: ufs: qcom: Align unipro clk attributes configuration as per HPG

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Message-ID: <20230901154358.GU818859@hu-bjorande-lv.qualcomm.com>
Date:   Fri, 1 Sep 2023 08:43:58 -0700
From:   Bjorn Andersson <quic_bjorande@...cinc.com>
To:     Nitin Rawat <quic_nitirawa@...cinc.com>
CC:     <mani@...nel.org>, <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <jejb@...ux.ibm.com>,
        <martin.petersen@...cle.com>, <quic_cang@...cinc.com>,
        <quic_nguyenb@...cinc.com>, <linux-scsi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        "Naveen Kumar Goud Arepalli" <quic_narepall@...cinc.com>
Subject: Re: [PATCH V6 4/6] scsi: ufs: qcom: Align unipro clk attributes
 configuration as per HPG

On Fri, Sep 01, 2023 at 05:13:34PM +0530, Nitin Rawat wrote:
> Currently CORE_CLK_1US_CYCLES, PA_VS_CORE_CLK_40NS_CYCLES are configured
> in clk scaling post change ops.
> 
> Move this to clk scaling pre change ops to align completely with hardware
> specification. This doesn't bring any functionality change.
> 

How can applying the clock scaling configuration, and "aligning with
hardware specification" not "bring any functionality change"?

If the code is called in a way where there is no difference between pre
and post callbacks, then state that - but it begs the question, why do
we have this "flexible" (complex) callback scheme if it doesn't matter.

Regards,
Bjorn