linux-kernel - Re: [PATCH] net: mv643xx_eth: Add missing phy_addr

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Date:	Tue, 5 Nov 2013 18:00:24 -0500
From:	Jason Cooper <jason@...edaemon.net>
To:	Arnaud Ebalard <arno@...isbad.org>
Cc:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev@...ts.ozlabs.org, David Miller <davem@...emloft.net>,
	Lennert Buytenhek <buytenh@...tstofly.org>
Subject: Re: [PATCH] net: mv643xx_eth: Add missing phy_addr_set in DT mode

On Tue, Nov 05, 2013 at 11:12:00PM +0100, Arnaud Ebalard wrote:
> Hi Jason,
> 
> Jason Gunthorpe <jgunthorpe@...idianresearch.com> writes:
> 
> > Commit cc9d4598 'net: mv643xx_eth: use of_phy_connect if phy_node
> > present' made the call to phy_scan optional, if the DT has a link to
> > the phy node.
> >
> > However phy_scan has the side effect of calling phy_addr_set, which
> > writes the phy MDIO address to the ethernet controller. If phy_addr_set
> > is not called, and the bootloader has not set the correct address then
> > the driver will fail to function.
> 
> Thanks *a lot* for fixing this one! I had the issue on my ReadyNAS 102
> (Armada 370 based) which I had put on a todo list and temporarily

readynas duo v2?

thx,

Jason.

> workarounded by including a 'ping whatever' call in my u-boot env in
> order to force it to do the init. Without it, I was unable to properly
> use the interface. With your fix, after multiple reboots to test it,
> everything works as expected. So, FWIW: 
> 
> Tested-by: Arnaud Ebalard <arno@...isbad.org>
> 
> Cheers,
> 
> a+
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