linux-kernel - Re: [PATCH V2 08/15] cpufreq: mediatek: Move voltage limits to platform data

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Date:   Mon, 11 Apr 2022 19:18:25 +0800
From:   Rex-BC Chen <rex-bc.chen@...iatek.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, <rafael@...nel.org>,
        <viresh.kumar@...aro.org>, <robh+dt@...nel.org>,
        <krzk+dt@...nel.org>
CC:     <matthias.bgg@...il.com>, <jia-wei.chang@...iatek.com>,
        <roger.lu@...iatek.com>, <hsinyi@...gle.com>,
        <linux-pm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: Re: [PATCH V2 08/15] cpufreq: mediatek: Move voltage limits to
 platform data

On Fri, 2022-04-08 at 15:36 +0200, AngeloGioacchino Del Regno wrote:
> Il 08/04/22 06:59, Rex-BC Chen ha scritto:
> > From: Jia-Wei Chang <jia-wei.chang@...iatek.com>
> > 
> > Voltages and shifts are defined as macros originally.
> > There are different requirements of these values for each MediaTek
> > SoCs.
> > Therefore, we add the platform data and move these values into it.
> > 
> > Signed-off-by: Jia-Wei Chang <jia-wei.chang@...iatek.com>
> > Signed-off-by: Rex-BC Chen <rex-bc.chen@...iatek.com>
> > ---
> >   drivers/cpufreq/mediatek-cpufreq.c | 90 ++++++++++++++++++++-----
> > -----
> >   1 file changed, 61 insertions(+), 29 deletions(-)
> > 
> > diff --git a/drivers/cpufreq/mediatek-cpufreq.c
> > b/drivers/cpufreq/mediatek-cpufreq.c
> > index 1369da62780a..0be5609ee82e 100644
> > --- a/drivers/cpufreq/mediatek-cpufreq.c
> > +++ b/drivers/cpufreq/mediatek-cpufreq.c
> 
> ..snip..
> 
> > @@ -625,20 +649,27 @@ static struct platform_driver
> > mtk_cpufreq_platdrv = {
> >   	.probe		= mtk_cpufreq_probe,
> >   };
> >   
> > +static const struct mtk_cpufreq_platform_data mtk_platform_data =
> > {
> 
> I would prefer if you name this after the oldest SoC that is
> supported in this
> driver, or after the IP version.
> 
> Example: if the oldest one is mt7622, then this should be
> mt7622_platform_data;
>           if newer SoCs have got a different cpu frequency control
> IP, then we
>           should have here something like
>           mtk_v1_platform_data, mtk_v1_3_platform_data.
> 
> Please note that I didn't check release dates, so my reference to
> mt7622 is
> purely casual.
> 
> Regards,
> Angelo

Hello Angelo,

Thanks for your review.
I will rename it as mt2701_platform_data.

BRs,
Rex