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From: maxime.ripard@free-electrons.com (Maxime Ripard)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 8/8] ARM: dts: sun7i: Add ethernet alias for GMAC
Date: Mon, 3 Feb 2014 20:38:02 +0100	[thread overview]
Message-ID: <20140203193802.GE25625@lukather> (raw)
In-Reply-To: <1391398346-5094-9-git-send-email-wens@csie.org>

On Mon, Feb 03, 2014 at 11:32:26AM +0800, Chen-Yu Tsai wrote:
> U-Boot will insert MAC address into the device tree image.
> It looks up ethernet[0-5] aliases to find the ethernet nodes.
> Alias GMAC as ethernet0, as it is the only ethernet controller used.
> 
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
> ---
>  arch/arm/boot/dts/sun7i-a20.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
> index 65fb8d0..c48fb11 100644
> --- a/arch/arm/boot/dts/sun7i-a20.dtsi
> +++ b/arch/arm/boot/dts/sun7i-a20.dtsi
> @@ -17,7 +17,7 @@
>  	interrupt-parent = <&gic>;
>  
>  	aliases {
> -		ethernet0 = &emac;
> +		ethernet0 = &gmac;
>  	};

I'm not very fond of this patch.

People might rely on the fact that ethernet0 is actually the emac, and
are expecting u-boot to fill the ethaddr variable to the emac, and not
the gmac.

Since u-boot is totally able to deal with several ethernet addresses,
please add it as ethernet1.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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WARNING: multiple messages have this Message-ID (diff)
From: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
Cc: Emilio Lopez <emilio-0Z03zUJReD5OxF6Tv1QG9Q@public.gmane.org>,
	Mike Turquette
	<mturquette-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v3 8/8] ARM: dts: sun7i: Add ethernet alias for GMAC
Date: Mon, 3 Feb 2014 20:38:02 +0100	[thread overview]
Message-ID: <20140203193802.GE25625@lukather> (raw)
In-Reply-To: <1391398346-5094-9-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>

[-- Attachment #1: Type: text/plain, Size: 1188 bytes --]

On Mon, Feb 03, 2014 at 11:32:26AM +0800, Chen-Yu Tsai wrote:
> U-Boot will insert MAC address into the device tree image.
> It looks up ethernet[0-5] aliases to find the ethernet nodes.
> Alias GMAC as ethernet0, as it is the only ethernet controller used.
> 
> Signed-off-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
> ---
>  arch/arm/boot/dts/sun7i-a20.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
> index 65fb8d0..c48fb11 100644
> --- a/arch/arm/boot/dts/sun7i-a20.dtsi
> +++ b/arch/arm/boot/dts/sun7i-a20.dtsi
> @@ -17,7 +17,7 @@
>  	interrupt-parent = <&gic>;
>  
>  	aliases {
> -		ethernet0 = &emac;
> +		ethernet0 = &gmac;
>  	};

I'm not very fond of this patch.

People might rely on the fact that ethernet0 is actually the emac, and
are expecting u-boot to fill the ethaddr variable to the emac, and not
the gmac.

Since u-boot is totally able to deal with several ethernet addresses,
please add it as ethernet1.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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WARNING: multiple messages have this Message-ID (diff)
From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: Chen-Yu Tsai <wens@csie.org>
Cc: Emilio Lopez <emilio@elopez.com.ar>,
	Mike Turquette <mturquette@linaro.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-sunxi@googlegroups.com, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 8/8] ARM: dts: sun7i: Add ethernet alias for GMAC
Date: Mon, 3 Feb 2014 20:38:02 +0100	[thread overview]
Message-ID: <20140203193802.GE25625@lukather> (raw)
In-Reply-To: <1391398346-5094-9-git-send-email-wens@csie.org>

[-- Attachment #1: Type: text/plain, Size: 1168 bytes --]

On Mon, Feb 03, 2014 at 11:32:26AM +0800, Chen-Yu Tsai wrote:
> U-Boot will insert MAC address into the device tree image.
> It looks up ethernet[0-5] aliases to find the ethernet nodes.
> Alias GMAC as ethernet0, as it is the only ethernet controller used.
> 
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
> ---
>  arch/arm/boot/dts/sun7i-a20.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
> index 65fb8d0..c48fb11 100644
> --- a/arch/arm/boot/dts/sun7i-a20.dtsi
> +++ b/arch/arm/boot/dts/sun7i-a20.dtsi
> @@ -17,7 +17,7 @@
>  	interrupt-parent = <&gic>;
>  
>  	aliases {
> -		ethernet0 = &emac;
> +		ethernet0 = &gmac;
>  	};

I'm not very fond of this patch.

People might rely on the fact that ethernet0 is actually the emac, and
are expecting u-boot to fill the ethaddr variable to the emac, and not
the gmac.

Since u-boot is totally able to deal with several ethernet addresses,
please add it as ethernet1.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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  reply	other threads:[~2014-02-03 19:38 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-03  3:32 [PATCH v3 0/8] Add Allwinner A20 GMAC ethernet support Chen-Yu Tsai
2014-02-03  3:32 ` Chen-Yu Tsai
2014-02-03  3:32 ` Chen-Yu Tsai
2014-02-03  3:32 ` [PATCH v3 1/8] clk: sunxi: Add Allwinner A20/A31 GMAC clock unit Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03 19:31   ` Maxime Ripard
2014-02-03 19:31     ` Maxime Ripard
2014-02-03 19:31     ` Maxime Ripard
2014-02-04  2:43     ` Chen-Yu Tsai
2014-02-04  2:43       ` Chen-Yu Tsai
2014-02-04  2:43       ` Chen-Yu Tsai
2014-02-04  9:27       ` Maxime Ripard
2014-02-04  9:27         ` Maxime Ripard
2014-02-04  9:27         ` Maxime Ripard
2014-02-03  3:32 ` [PATCH v3 2/8] ARM: dts: sun7i: Add GMAC clock node to sun7i DTSI Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03 19:34   ` Maxime Ripard
2014-02-03 19:34     ` Maxime Ripard
2014-02-03 19:34     ` Maxime Ripard
2014-02-04  3:06     ` Chen-Yu Tsai
2014-02-04  3:06       ` Chen-Yu Tsai
2014-02-04  3:06       ` Chen-Yu Tsai
2014-02-04  9:13       ` Maxime Ripard
2014-02-04  9:13         ` Maxime Ripard
2014-02-04  9:13         ` Maxime Ripard
2014-02-03  3:32 ` [PATCH v3 3/8] ARM: dts: sun7i: Add GMAC controller " Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32 ` [PATCH v3 4/8] ARM: dts: sun7i: Add pin muxing options for the GMAC Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32 ` [PATCH v3 5/8] ARM: dts: sun7i: cubietruck: Enable " Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32 ` [PATCH v3 6/8] ARM: dts: sun7i: cubieboard2: Enable GMAC instead of EMAC Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32 ` [PATCH v3 7/8] ARM: dts: sun7i: olinuxino-micro: " Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32 ` [PATCH v3 8/8] ARM: dts: sun7i: Add ethernet alias for GMAC Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03  3:32   ` Chen-Yu Tsai
2014-02-03 19:38   ` Maxime Ripard [this message]
2014-02-03 19:38     ` Maxime Ripard
2014-02-03 19:38     ` Maxime Ripard
2014-02-05  4:43     ` Chen-Yu Tsai
2014-02-05  4:43       ` Chen-Yu Tsai
2014-02-05  4:43       ` Chen-Yu Tsai
2014-02-05 10:32       ` Maxime Ripard
2014-02-05 10:32         ` Maxime Ripard
2014-02-05 10:32         ` Maxime Ripard

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