netdev - Re: [PATCH] ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup

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Message-ID: <20130921171400.GA3181@verge.net.au>
Date:	Sat, 21 Sep 2013 10:14:05 -0700
From:	Simon Horman <horms@...ge.net.au>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:	linux-sh@...r.kernel.org, magnus.damm@...il.com,
	linux@....linux.org.uk, linux-arm-kernel@...ts.infradead.org,
	laurent.pinchart+renesas@...asonboard.com, netdev@...r.kernel.org
Subject: Re: [PATCH] ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup

On Sat, Sep 14, 2013 at 04:29:22AM +0400, Sergei Shtylyov wrote:
> Currently on the Lager board NFS timeouts/delays are seen when booting.  That
> turned out to happen because the SoC's ETH_LINK signal turns on and off after
> each packet.  It is connected to Micrel KSZ8041 PHY's LED0 signal. Ether LEDs
> on the Lager board are named LINK and ACTIVE which corresponds to non-default
> 01 setting of the PHY control register 1 bits 14-15. The 'sh_eth' driver resets
> the PHY when opening the network device, so we have to set the mentioned bits
> back to 01 from the default 00 value which causes bouncing of ETH_LINK.  That
> can be achieved using the PHY platform fixup mechanism if we also modify the
> driver to use it..
> 
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
> 
> ---
> This patch is against the recent Linus' tree. Its effect on NFS issue depends
> on the 'sh_eth' driver patch I've posted earlier. 
> Simon, please update your 'master' and/or 'fixes' branches since currently it's
> impossible to apply fixes to your tree.
> 
>  arch/arm/mach-shmobile/board-lager.c |   27 ++++++++++++++++++++++++++-
>  1 file changed, 26 insertions(+), 1 deletion(-)

Thanks, I have rebased my tree and applied this change to
the fixes-for-v3.12 branch.

And I will push the new tree either in the next
half hour or some time next week - I have to jump on a plane shortly.

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