netdev - Re: [PATCH] net: phy: Add config option to specify external switch port to be used if switch is used as PHY

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Message-ID: <20110908212430.GA27980@electric-eye.fr.zoreil.com>
Date:	Thu, 8 Sep 2011 23:24:30 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	Lambrecht Jürgen <J.Lambrecht@...EVIC.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-embedded@...r.kernel.org" <linux-embedded@...r.kernel.org>
Subject: Re: [PATCH] net: phy: Add config option to specify external switch port to be used if switch is used as PHY

Lambrecht Jürgen <J.Lambrecht@...EVIC.com> :
> On 09/08/2011 12:13 PM, Francois Romieu wrote:
[...]
> > Which driver(s) do you use that you can not set phy_mask directly ?
> >
> The HW driver is 'FEC' for iMX Ethernet. For the PHY, just MII and PHYLIB.
> I am rather new to linux, didn't knew phy_mask. Checked it now, and is 
> not set in fec.c.
> You mean then to patch drivers/net/fec.c in the same way (as my current 
> patch) to set the phy_mask instead (via menuconfig, or in the platform 
> init)?

It is not my area but I would have drivers/net/fec.c::fec_devtype.driver_data
point to a real struct where the relevant phy_mask and the current quirks
are stored, then add a new entry in fec_devtype and a reference to it
(Kconfig + platform init) somewhere below arch/arm/plat-mxc.

Freescale's application note suggests that the MX25 fec allows some freedom
for the implementation of the media interface. So it may not be overkill.

-- 
Ueimor
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