netdev - Re: [PATCH] powerpc: Add TBI PHY node to first MDIO bus

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Message-Id: <20111207.150208.588206951117780997.davem@davemloft.net>
Date:	Wed, 07 Dec 2011 15:02:08 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	afleming@...escale.com
Cc:	galak@...nel.crashing.org, netdev@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] powerpc: Add TBI PHY node to first MDIO bus

From: Andy Fleming <afleming@...escale.com>
Date: Wed, 7 Dec 2011 13:50:57 -0600

> Systems which use the fsl_pq_mdio driver need to specify an
> address for TBI PHY transactions such that the address does
> not conflict with any PHYs on the bus (all transactions to
> that address are directed to the onboard TBI PHY). The driver
> used to scan for a free address if no address was specified,
> however this ran into issues when the PHY Lib was fixed so
> that all MDIO transactions were protected by a mutex. As it
> is, the code was meant to serve as a transitional tool until
> the device trees were all updated to specify the TBI address.
> 
> The best fix for the mutex issue was to remove the scanning code,
> but it turns out some of the newer SoCs have started to omit
> the tbi-phy node when SGMII is not being used. As such, these
> devices will now fail unless we add a tbi-phy node to the first
> mdio controller.
> 
> Signed-off-by: Andy Fleming <afleming@...escale.com>
> ---
> 
> This requires fsl_pq_mdio: Clean up tbi address configuration from
> the net tree in order to achieve its full effect.
> 
> This needs to go into 3.2.

I'm fine if the powerpc tree takes this one:

Acked-by: David S. Miller <davem@...emloft.net>
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