linux-kernel - Re: [PATCH 02/13] net: mvneta: enable IP checksum with jumbo frames for Armada 38x on Port0

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Message-ID: <4040597.3hXVb3XDMS@wuerfel>
Date:	Sun, 22 Nov 2015 21:00:28 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Marcin Wojtas <mw@...ihalf.com>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, thomas.petazzoni@...e-electrons.com,
	andrew@...n.ch, linux@....linux.org.uk, jason@...edaemon.net,
	myair@...vell.com, jaz@...ihalf.com, simon.guinot@...uanux.org,
	xswang@...vell.com, nadavh@...vell.com, alior@...vell.com,
	stable@...r.kernel.org, tn@...ihalf.com,
	gregory.clement@...e-electrons.com, nitroshift@...oo.com,
	davem@...emloft.net, sebastian.hesselbarth@...il.com
Subject: Re: [PATCH 02/13] net: mvneta: enable IP checksum with jumbo frames for Armada 38x on Port0

On Sunday 22 November 2015 08:53:48 Marcin Wojtas wrote:
> The Ethernet controller found in the Armada 38x SoC's family support
> TCP/IP checksumming with frame sizes larger than 1600 bytes, however
> only on port 0.
> 
> This commit enables this feature by using 'marvell,armada-xp-neta' in
> 'ethernet@...00' node.
> 
> Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
> Cc: <stable@...r.kernel.org> # v3.18+
> ---
>  arch/arm/boot/dts/armada-38x.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi
> index c6a0e9d..b7868b2 100644
> --- a/arch/arm/boot/dts/armada-38x.dtsi
> +++ b/arch/arm/boot/dts/armada-38x.dtsi
> @@ -494,7 +494,7 @@
>                         };
>  
>                         eth0: ethernet@...00 {
> -                               compatible = "marvell,armada-370-neta";
> +                               compatible = "marvell,armada-xp-neta";
>                                 reg = <0x70000 0x4000>;
>                                 interrupts-extended = <&mpic 8>;
>                                 clocks = <&gateclk 4>;
> 

As it's clear that they are not 100% backwards compatible, please
add a SoC specific compatible string here as well, like

	compatible = "marvell,armada-380-neta", "marvell,armada-xp-neta";

Maybe also leave the 370 string in place.

	Arnd
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