linux-kernel - Re: [PATCH v5 05/13] ARM: dts: sun8i: Add R

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Message-ID: <20180403215202.2892baae@dell-desktop.home>
Date:   Tue, 3 Apr 2018 21:52:02 +0200
From:   Mylène Josserand <mylene.josserand@...tlin.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Russell King <linux@...linux.org.uk>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Marc Zyngier <marc.zyngier@....com>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        devicetree <devicetree@...r.kernel.org>,
        LABBE Corentin <clabbe.montjoie@...il.com>,
        quentin.schulz@...tlin.com,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 05/13] ARM: dts: sun8i: Add R_CPUCFG device node for
 the A83T dtsi

Hello,

On Tue, 3 Apr 2018 17:07:06 +0800
Chen-Yu Tsai <wens@...e.org> wrote:

> On Tue, Apr 3, 2018 at 2:18 PM, Mylène Josserand
> <mylene.josserand@...tlin.com> wrote:
> > The R_CPUCFG is a collection of registers needed for SMP bringup
> > on clusters and cluster's reset.
> > For the moment, documentation about this register is found in
> > Allwinner's code only.
> >
> > Signed-off-by: Mylène Josserand <mylene.josserand@...tlin.com>
> > ---
> >  arch/arm/boot/dts/sun8i-a83t.dtsi | 5 +++++
> >  1 file changed, 5 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi
> > index 32992afa0b12..85f14f4ebeed 100644
> > --- a/arch/arm/boot/dts/sun8i-a83t.dtsi
> > +++ b/arch/arm/boot/dts/sun8i-a83t.dtsi
> > @@ -933,6 +933,11 @@
> >                         #reset-cells = <1>;
> >                 };
> >
> > +               r_cpucfg@...1c00 {
> > +                       compatible = "allwinner,sun8i-a83t-r-cpucfg";
> > +                       reg = <0x1f01c00 0x100>;  
> 
> The memory map says that its size is 0x400.
> 
> ChenYu

True, thank you for the correction.

Best regards,

-- 
Mylène Josserand, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
http://bootlin.com