netdev - How to deal with a PHY configuration related to the board?

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Date:	Tue, 14 Feb 2012 10:26:06 +0100
From:	Ludovic Desroches <ludovic.desroches@...el.com>
To:	linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org
Cc:	"Ferre, Nicolas" <nicolas.ferre@...el.com>
Subject: How to deal with a PHY configuration related to the board?

Hello,

I am using a Micrel KSZ9021RN PHY and I would like to configure some registers
as 'RGMII Clock and Control Pad Skew' and 'RGMII RX Data Pad Skew'.
So the values of these registers are board dependant and I wondering what is
the proper way to set them.
It seems there is no platform data usable for this case. Having a quick look
to other PHYs, the situation seems the same.

Can you give me some clues about how to do this? Did I miss anything which
allow to do this?

Thanks

Regards

Ludovic
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