linux-kernel - Re: [PATCH v1] cpufreq: mediatek-hw: Add support for Mediatek cpufreq HW driver

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Date:   Mon, 26 Oct 2020 14:20:34 +0800
From:   Hector Yuan <hector.yuan@...iatek.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
CC:     <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
        "Rob Herring" <robh+dt@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Maxime Ripard <mripard@...nel.org>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Amit Kucheria <amit.kucheria@...aro.org>,
        "Stephen Boyd" <sboyd@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Dave Gerlach <d-gerlach@...com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Robin Murphy <robin.murphy@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <wsd_upstream@...iatek.com>
Subject: Re: [PATCH v1] cpufreq: mediatek-hw: Add support for Mediatek
 cpufreq HW driver

On Fri, 2020-10-23 at 14:57 +0530, Viresh Kumar wrote:
> On 23-10-20, 17:08, Hector Yuan wrote:
> > On Fri, 2020-10-23 at 13:58 +0530, Viresh Kumar wrote:
> > > On 23-10-20, 16:24, Hector Yuan wrote:
> > > > This patchset includes 6 patches and depends on the MT6779 DTS patch[1] submitted by Hanks Chen.
> > > > The first 3 patches are for CPUFREQ HW driver and device tree binding, which are already sent before separately [2][3]. For binding part, I add a new patch to add property in cpu schema.
> > > > Besides, we add three more patches including EM power table, SVS CPU initialize, and cooling device.
> > > 
> > > And even after so many versions of these you chose to name this V1. It
> > > is very difficult for reviewers to find time to review your stuff, and
> > > they expect some sort of summary from you on what exactly changed from
> > > last version and you also need to name the current version currently.
> > > 
> > > This should have been V8 and you should have added a "V7->V8 diff:"
> > > section here, naming all the changes you did. Please send that as
> > > reply to this email, so I can see what really changed.
> > > 
> > Hi, Viresh
> > 
> > Sorry for your inconvenience.
> > #1~#3 is for cpufreq driver we have reviewed and the bindings which
> > separate freq domain to CPU schema.There is no change for the driver
> > itself.
> >   1. cpufreq: mediatek-hw: Add support for CPUFREQ HW
> >   2. dt-bindings: arm: cpus: Document 'mtk,freq-domain' property
> >   3. dt-bindings: cpufreq: add bindings for MediaTek cpufreq HW
> > 
> > #4~#6 is for other CPU features, i.e. SVS [1]
> >   4. cpufreq: mediatek-hw: register EM power table
> >   5. cpufreq: mediatek-hw: Add SVS CPU initialization
> >   6. cpufreq: mediatek-hw: Add cooling dev flag
> > 
> > I supposed that it could be more clean to separate #4~#6 in another
> > patchset.May I know is it okay to you? Or I should merge all of changes
> > into v8 like you mentioned? Thank you.
> 
> Merge them all together and explain any special features (like SVS) in
> the commit log. It will also help in future when people want to
> understand your driver. Explain whatever is worth explaining there and
> is not straight forward.
> 
> Thanks for the details.
> 
OK, I will merge all changes in v8. And explain details in cover-letter.
Thank you.