linux-kernel - Re: [PATCH 4/4] ARM: defconfig: s5pv210: Add cpufreq support

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Message-ID: <CAKpie0TvS4bzdv82m8T24GaH_DrGsjdznCSQcugtt9DqKss_sg@mail.gmail.com>
Date:   Thu, 10 Jan 2019 08:55:31 +0100
From:   Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, linux@...linux.org.uk,
        rjw@...ysocki.net,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:SAMSUNG SOC CLOCK DRIVERS" 
        <linux-samsung-soc@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH 4/4] ARM: defconfig: s5pv210: Add cpufreq support

czw., 10 sty 2019 o 08:02 Viresh Kumar <viresh.kumar@...aro.org> napisał(a):
>
> On 08-01-19, 21:05, Paweł Chmiel wrote:
> > This commit enables cpufreq support for all s5pv210 devices.
> >
> > Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
> > ---
> >  arch/arm/configs/s5pv210_defconfig | 6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/arch/arm/configs/s5pv210_defconfig b/arch/arm/configs/s5pv210_defconfig
> > index 951196bdf008..fd4f28aabda6 100644
> > --- a/arch/arm/configs/s5pv210_defconfig
> > +++ b/arch/arm/configs/s5pv210_defconfig
> > @@ -11,6 +11,12 @@ CONFIG_ARCH_S5PV210=y
> >  CONFIG_VMSPLIT_2G=y
> >  CONFIG_ARM_APPENDED_DTB=y
> >  CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x20800000,8M console=ttySAC1,115200 init=/linuxrc"
> > +CONFIG_CPU_FREQ=y
> > +CONFIG_CPU_FREQ_STAT=y
> > +CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
> > +CONFIG_CPU_FREQ_GOV_POWERSAVE=m
> > +CONFIG_CPU_FREQ_GOV_USERSPACE=m
> > +CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
>
> You don't want to use schedutil ? That is the default governor for
> everyone now a days.
schedutil depends on SMP, which is not enabled on s5pv210 (it has only
one cpu core).
>
> --
> viresh