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From:   Chen-Yu Tsai <wens@csie.org>
Date:   Tue, 3 Apr 2018 17:07:06 +0800
Message-ID: <CAGb2v66w3349h0b+xRD8seHhqMNoue8AzAFr-UPKvzZAtvoV5g@mail.gmail.com>
Subject: Re: [PATCH v5 05/13] ARM: dts: sun8i: Add R_CPUCFG device node for
 the A83T dtsi
To:     =?UTF-8?Q?Myl=C3=A8ne_Josserand?= <mylene.josserand@bootlin.com>
Cc:     Russell King <linux@armlinux.org.uk>,
        Maxime Ripard <maxime.ripard@bootlin.com>,
        Marc Zyngier <marc.zyngier@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Rob Herring <robh+dt@kernel.org>,
        devicetree <devicetree@vger.kernel.org>,
        LABBE Corentin <clabbe.montjoie@gmail.com>,
        quentin.schulz@bootlin.com,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>
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On Tue, Apr 3, 2018 at 2:18 PM, Mylène Josserand
<mylene.josserand@bootlin.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@bootlin.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@1f01c00 {
> +                       compatible = "allwinner,sun8i-a83t-r-cpucfg";
> +                       reg = <0x1f01c00 0x100>;

The memory map says that its size is 0x400.

ChenYu