linux-kernel - Re: [PATCH 1/1] MIPS: DTS: cavium-octeon: provide model attribute

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Date:	Mon, 15 Feb 2016 14:16:48 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Heinrich Schuchardt <xypron.glpk@....de>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>
Cc:	Ralf Baechle <ralf@...ux-mips.org>,
	Andrew Bresticker <abrestic@...omium.org>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	devicetree@...r.kernel.org, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] MIPS: DTS: cavium-octeon: provide model attribute

Hello.

On 2/15/2016 8:26 AM, Heinrich Schuchardt wrote:

> Downstream packages like Debian flash-kernel rely on
> /proc/device-tree/model
> to determine how to install an updated kernel image.
>
> Most dts files provide this property.
> It is suggested by IEEE Std 1275-1994.
>
> This patch adds a model attribute for Octeon CPUs.
>
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
> ---
>   arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts | 1 +
>   arch/mips/boot/dts/cavium-octeon/octeon_68xx.dts | 1 +
>   2 files changed, 2 insertions(+)
>
> diff --git a/arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts b/arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts
> index 9c48e05..a746678 100644
> --- a/arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts
> +++ b/arch/mips/boot/dts/cavium-octeon/octeon_3xxx.dts
> @@ -8,6 +8,7 @@
>    */
>   / {
>   	compatible = "cavium,octeon-3860";
> +	model = "Cavium Octeon 3XXX";
>   	#address-cells = <2>;
>   	#size-cells = <2>;
>   	interrupt-parent = <&ciu>;
> diff --git a/arch/mips/boot/dts/cavium-octeon/octeon_68xx.dts b/arch/mips/boot/dts/cavium-octeon/octeon_68xx.dts
> index 79b46fc..c8a292a 100644
> --- a/arch/mips/boot/dts/cavium-octeon/octeon_68xx.dts
> +++ b/arch/mips/boot/dts/cavium-octeon/octeon_68xx.dts
> @@ -8,6 +8,7 @@
>    */
>   / {
>   	compatible = "cavium,octeon-6880";
> +	model = "Cavium Octeon 68XX";
>   	#address-cells = <2>;
>   	#size-cells = <2>;
>   	interrupt-parent = <&ciu2>;

     The ePAPR 1.1 standard says:

2.3.2 model

Property: model
Value type: <string>
Description:
	The model property value is a <string> that specifies the
  	manufacturer’s model number of the device.

	The recommended format is: “manufacturer,model”, where manufacturer
	is a string describing the name of the manufacturer (such as a stock
	ticker symbol), and model specifies the model number.

Example:
	model = “fsl,MPC8349EMITX”;

MBR, Sergei