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Message-ID: <51F6630D.5010603@arm.com>
Date:	Mon, 29 Jul 2013 13:41:49 +0100
From:	Sudeep KarkadaNagesha <Sudeep.KarkadaNagesha@....com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
CC:	Russell King <linux@....linux.org.uk>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sudeep.KarkadaNagesha@....com
Subject: Re: [PATCH 1/4] ARM: dove: add cpu device tree node

On 29/07/13 13:29, Sebastian Hesselbarth wrote:
> This adds a node for the Marvell Sheeva PJ4A CPU found on Dove SoCs.
> While at it, also move the l2-cache node out of internal registers and
> consistently name different nodes.
> 
> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
> ---
> Cc: Russell King <linux@....linux.org.uk>
> Cc: Jason Cooper <jason@...edaemon.net>
> Cc: Andrew Lunn <andrew@...n.ch>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: devicetree@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  arch/arm/boot/dts/dove.dtsi |   52 ++++++++++++++++++++++++++-----------------
>  1 file changed, 32 insertions(+), 20 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/dove.dtsi b/arch/arm/boot/dts/dove.dtsi
> index 8d5be1e8..09d9710 100644
> --- a/arch/arm/boot/dts/dove.dtsi
> +++ b/arch/arm/boot/dts/dove.dtsi
> @@ -10,6 +10,23 @@
>  		gpio2 = &gpio2;
>  	};
>  
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		cpu0: cpu@0 {
> +			compatible = "marvell,pj4a", "marvell,sheeva-v7";
> +			device_type = "cpu";
> +			next-level-cache = <&l2>;
> +			reg = <0>;
> +		};
> +	};
> +
> +	l2: l2-cache {
> +		compatible = "marvell,tauros2-cache";
> +		marvell,tauros2-cache-features = <0>;
> +	};
Hi Sebastian,

This is not entirely related to the patch but thought of checking with
you. I was trying to get info on L2 cache controller on Marvell SoCs,
mainly structure or way/set size. Is that something we can get
dynamically ? Some specification I referred said its integrated and some
said its separate(not unified). Basically I need information around
various L2 cache implementations(Tauros2/Feroceon) from Marvell.

Any pointers or contacts to get this information will be helpful.

Regards,
Sudeep


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