netdev - Re: [RFC] net/fs_enet: send a reset request to the PHY on init

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Date:	Fri, 4 Sep 2009 09:45:54 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:	Pantelis Antoniou <pantelis.antoniou@...il.com>,
	Vitaly Bordug <vbordug@...mvista.com>, linuxppc-dev@...abs.org,
	netdev@...r.kernel.org, Wolfgang Denk <wd@...x.de>
Subject: Re: [RFC] net/fs_enet: send a reset request to the PHY on init

On Fri, Sep 4, 2009 at 9:38 AM, Sebastian Andrzej
Siewior<bigeasy@...utronix.de> wrote:
> Grant Likely wrote:
>  > What version of the kernel are you using?  The line numbers don't
>>
>> match up with kernel mainline, so I wonder if this is before or after
>> the OF MDIO rework changes.
>
> It is the kernel which was shipped in ads5121's bsp which is 2.6.24.

Okay, I can safely ignore this then.  Wolfgang may be interested
though.  He's been doing some work to get 5121 support mainlined.

> I have no network support in boot loader so I can't do it there. Doing it at
> phy-probe time sounds reasonable.
> So all other boards are doing this kind of reset in u-boot?

In general I take the approach that as much as possible firmware
should have devices in a sane state before booting the kernel just to
avoid doing board specific fixup stuff in the kernel tree.  But this
isn't law, just more of a rule of thumb that I go by.  2nd resort is
to create a board specific platform code file and put it there
(arch/powerpc/platforms/*).

g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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