linux-kernel - Re: [PATCH 05/10] ARM: sunxi: Add Allwinner A31 DTSI

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Message-ID: <51F78056.6000104@arm.com>
Date:	Tue, 30 Jul 2013 09:59:02 +0100
From:	Marc Zyngier <marc.zyngier@....com>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Mike Turquette <mturquette@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	"albert.u.boot@...baud.net" <albert.u.boot@...baud.net>,
	Emilio Lopez <emilio@...pez.com.ar>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"shuge@...winnertech.com" <shuge@...winnertech.com>,
	"linux-sunxi@...glegroups.com" <linux-sunxi@...glegroups.com>,
	"kevin.z.m.zh@...il.com" <kevin.z.m.zh@...il.com>,
	"sunny@...winnertech.com" <sunny@...winnertech.com>,
	Olof Johansson <olof@...om.net>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 05/10] ARM: sunxi: Add Allwinner A31 DTSI

Hi Maxime,

On 23/07/13 23:25, Maxime Ripard wrote:
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> ---
>  arch/arm/boot/dts/Makefile       |   3 +-
>  arch/arm/boot/dts/sun6i-a31.dtsi | 155 +++++++++++++++++++++++++++++++++++++++
>  2 files changed, 157 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/boot/dts/sun6i-a31.dtsi
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 641b3c9..1482533 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -210,7 +210,8 @@ dtb-$(CONFIG_ARCH_SUNXI) += \
>  	sun4i-a10-mini-xplus.dtb \
>  	sun4i-a10-hackberry.dtb \
>  	sun5i-a10s-olinuxino-micro.dtb \
> -	sun5i-a13-olinuxino.dtb
> +	sun5i-a13-olinuxino.dtb \
> +	sun6i-a31-colombus.dtb
>  dtb-$(CONFIG_ARCH_TEGRA) += tegra20-harmony.dtb \
>  	tegra20-iris-512.dtb \
>  	tegra20-medcom-wide.dtb \
> diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi
> new file mode 100644
> index 0000000..c6c19a9
> --- /dev/null
> +++ b/arch/arm/boot/dts/sun6i-a31.dtsi
> @@ -0,0 +1,155 @@
> +/*
> + * Copyright 2013 Maxime Ripard
> + *
> + * Maxime Ripard <maxime.ripard@...e-electrons.com>
> + *
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +/include/ "skeleton.dtsi"
> +

[...]

> +		gic: interrupt-controller@...81000 {
> +			compatible = "arm,cortex-a7-gic";
> +			reg = <0x01c81000 0x1000>, <0x01c82000 0x100>;

Th Cortex A7 TRM indicates that its GIC has the virtualization
extensions. You should reflect this in the binding (wider GICC range,
GICH and GICV ranges, maintenance interrupt).

See
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0464d/BGBJFJJA.html
for details.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

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