linux-kernel - Re: [PATCH V2 00/15] cpufreq: mediatek: Cleanup and support MT8183 and MT8186

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Date:   Mon, 11 Apr 2022 19:37:54 +0800
From:   Rex-BC Chen <rex-bc.chen@...iatek.com>
To:     Hsin-Yi Wang <hsinyi@...gle.com>,
        Kevin Hilman <khilman@...libre.com>
CC:     <rafael@...nel.org>, Viresh Kumar <viresh.kumar@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, <krzk+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tim Chang <jia-wei.chang@...iatek.com>,
        <roger.lu@...iatek.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 00/15] cpufreq: mediatek: Cleanup and support MT8183
 and MT8186

On Sat, 2022-04-09 at 09:05 +0800, Hsin-Yi Wang wrote:
> On Sat, Apr 9, 2022 at 5:11 AM Kevin Hilman <khilman@...libre.com>
> wrote:
> > 
> > Rex-BC Chen <rex-bc.chen@...iatek.com> writes:
> > 
> > > Cpufreq is a DVFS driver used for power saving to scale the clock
> > > frequency
> > > and supply the voltage for CPUs. This series do some cleanup for
> > > MediaTek
> > > cpufreq drivers and add support for MediaTek SVS[2] and MediaTek
> > > CCI
> > > devfreq[3] which are supported in MT8183 and MT8186.
> > 
> > There's no upstream DT for MT8186 and there are no OPPs defined in
> > the
> > upstream DT for MT8183.
> > 
> > In order to test this on mainline, could you provide a patch for
> > MT8183
> > that adds OPPs to the DT so this can be tested with mainline?
> > 
> 
> The DT change used in the downstream kernel is from here:
> 
https://urldefense.com/v3/__https://patchwork.kernel.org/project/linux-mediatek/patch/1616499241-4906-9-git-send-email-andrew-sh.cheng@mediatek.com/__;!!CTRNKA9wMg0ARbw!ykRlVJPl8TZWMCfnAzLnqhtn3iqXeHh8f6tMBWpneZuJPPmJTGEDIiEgv-R_Q4gVunnp$
>  
> Might need some update (eg. add the cci property in cpu) though.
> Rex, you can also include the 8183 DT change in the next version
> since
> most of the mt8183 dts are in the mainline.
> 
> Thanks
> 
> > Thanks,
> > 
> > Kevin

Hello Kevin and Hsinyi,

OK I will add dts part of cpufreq for MT8183 in next version.
And I think the cci part will be upstreamed in cci seriues.

BRs,
Rex