linux-kernel - RE: [PATCH 1/2] net: phy: Update get_phy_c45

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Date:   Tue, 23 May 2017 16:32:07 +0000
From:   Bogdan Purcareata <bogdan.purcareata@....com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     "f.fainelli@...il.com" <f.fainelli@...il.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/2] net: phy: Update get_phy_c45_ids for Cortina PHYs

> -----Original Message-----
> From: Andrew Lunn [mailto:andrew@...n.ch]
> Sent: Tuesday, May 23, 2017 7:04 PM
> To: Bogdan Purcareata <bogdan.purcareata@....com>
> Cc: f.fainelli@...il.com; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Subject: Re: [PATCH 1/2] net: phy: Update get_phy_c45_ids for Cortina PHYs
> 
> On Tue, May 23, 2017 at 03:53:18PM +0000, Bogdan Purcareata wrote:
> > Complete the work started by the following patches
> > 5f6c99e0 net: phy: fix a bug in get_phy_c45_ids
> > da1da284 net/phy: tune get_phy_c45_ids to support more c45 phy
> >
> > in order to properly get non-standard C45 10G PHY IDs (e.g. Cortina
> > CS4340).
> 
> At a first look, this seems to be a hack to work around a broken phy.
> 
> Instead of this, can you use the ethernet-phy-id property in device
> tree?

The patches mentioned in the commit message add _some_ support for the Cortina PHYs - mainly checking for devices at additional locations. Once they are found, the phy IDs must be read from custom locations. I followed the u-boot model [1].

I was aiming to patch the get_phy_c45_ids to fully handle the Cortina PHY scenario (right now, the support is only partial). 

[1] http://code.metager.de/source/xref/denx/u-boot/drivers/net/phy/cortina.c#288

Thank you!
Bogdan