linux-kernel - Re: [PATCH] cpsw: Add support to read cpu MAC address

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Message-Id: <20130114202651.5360F3E249D@localhost>
Date:	Mon, 14 Jan 2013 20:26:51 +0000
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Michal Bachraty <michal.bachraty@...eamunlimited.com>,
	rob.herring@...xeda.com, rob@...dley.net, linux@....linux.org.uk
Cc:	devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org,
	Michal Bachraty <michal.bachraty@...eamunlimited.com>
Subject: Re: [PATCH] cpsw: Add support to read cpu MAC address

On Fri, 11 Jan 2013 16:15:02 +0100, Michal Bachraty <michal.bachraty@...eamunlimited.com> wrote:
> Signed-off-by: Michal Bachraty <michal.bachraty@...eamunlimited.com>
> ---
>  Documentation/devicetree/bindings/net/cpsw.txt |   10 +-
>  arch/arm/boot/dts/am33xx.dtsi                  |    5 +-
>  drivers/net/ethernet/ti/cpsw.c                 |  121 +++++++++++++++++++++---
>  include/linux/platform_data/cpsw.h             |    8 ++
>  4 files changed, 128 insertions(+), 16 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/cpsw.txt b/Documentation/devicetree/bindings/net/cpsw.txt
> index dcaabe9..432122c 100644
> --- a/Documentation/devicetree/bindings/net/cpsw.txt
> +++ b/Documentation/devicetree/bindings/net/cpsw.txt
> @@ -4,7 +4,7 @@ TI SoC Ethernet Switch Controller Device Tree Bindings
>  Required properties:
>  - compatible		: Should be "ti,cpsw"
>  - reg			: physical base address and size of the cpsw
> -			  registers map
> +			  registers map and mac-address cpu config registers
>  - interrupts		: property with a value describing the interrupt
>  			  number
>  - interrupt-parent	: The parent interrupt controller
> @@ -25,17 +25,23 @@ Required properties:
>  - slave_reg_ofs		: Specifies slave register offset
>  - sliver_reg_ofs	: Specifies slave sliver register offset
>  - phy_id		: Specifies slave phy id
> -- mac-address		: Specifies slave MAC address
>  
>  Optional properties:
>  - ti,hwmods		: Must be "cpgmac0"
>  - no_bd_ram		: Must be 0 or 1
> +- mac-address-source 	: Specifies source of MAC address ("user-defined-mac",
> +			  "cpu-id0-mac", "cpu-id01-mac", "random-mac"). If not
> +			  specified, "cpu-id0-mac" is selected

Drop the '-mac' suffix on the values. The property is already named
"mac-address-source", so I think it is already unambiguious from the
context.  :-)

Otherwise the patch looks good to me, but I haven't gone over the code
in fine detail.

Acked-by: Grant Likely <grant.likely@...retlab.ca>

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