netdev - Re: [PATCH 4/4] FEC: Add time stamping code and a PTP hardware clock

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Date:	Wed, 19 Dec 2012 15:53:20 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Frank Li <Frank.Li@...escale.com>,
	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	Richard Cochran <richardcochran@...il.com>,
	Shawn Guo <shawn.guo@...aro.org>, Frank Li <lznuaa@...il.com>,
	lznua@...il.com, linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org, davem@...emloft.net
Subject: Re: [PATCH 4/4] FEC: Add time stamping code and a PTP hardware
 clock

On Tue, Dec 18, 2012 at 08:04:20AM +0100, Richard Cochran wrote:
> On Mon, Dec 17, 2012 at 09:02:32PM +0100, Sascha Hauer wrote:
> > This leaves an option in the tree which can be used to break FEC on
> > i.MX3/5.
> > 
> > 	depends on !SOC_IMX31 && !SOC_IMX35 && !SOC_IMX5
> > 
> > might be an option, but given that this patch seems to have bypassed any
> > review I feel more like reverting it.
> 
> Instead of reverting, I suggest finding a solution (Frank) to let the
> code work when it can work and to prevent it when it cannot. This
> could be kconfig, DT, or run time probing of silicon revisions, but I
> don't have access to this hardware, and so I can't really say how to
> fix it.
[...]

Please implement run-time probing.  A different configuration for
each SoC is just not sustainable for distributions.

Ben.

-- 
Ben Hutchings
We get into the habit of living before acquiring the habit of thinking.
                                                              - Albert Camus
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