netdev - RE: Marvell Phy (1510) issue since v4.7 kernel

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Date:   Wed, 11 Jan 2017 23:09:03 +0000
From:   "Kwok, WingMan" <w-kwok2@...com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     "rmk+kernel@....linux.org.uk" <rmk+kernel@....linux.org.uk>,
        "charles-antoine.couret@...vision.fr" 
        <charles-antoine.couret@...vision.fr>,
        "Karicheri, Muralidharan" <m-karicheri2@...com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: Marvell Phy (1510) issue since v4.7 kernel



> -----Original Message-----
> From: Andrew Lunn [mailto:andrew@...n.ch]
> Sent: Wednesday, January 11, 2017 6:00 PM
> To: Kwok, WingMan
> Cc: rmk+kernel@....linux.org.uk; charles-antoine.couret@...vision.fr;
> Karicheri, Muralidharan; netdev@...r.kernel.org
> Subject: Re: Marvell Phy (1510) issue since v4.7 kernel
> 
> > looping in Charles-Antoine (author of patch
> > with commit id 6cfb3bcc)
> >
> > Charles-Antoine,
> >
> > Do you have the ID of Marvell PHY 88E1512?
> 
> I suspect that is the wrong question to ask.
> 
> The Marvell driver is being loaded, so it must be using on of the IDs
> in the driver. There is no ID in the driver specifically for the
> 88E1512. It seems like the 88E1512 uses the 88E1510 ID.
> 
> So i think the correct question should be, how can we tell the 88E1512
> from the 88E1510 if they have the same ID in register 3.
> 
> It appears that for the 88E1512, page 0 are the copper registers and
> page 1 is the fibre registers. Maybe the 88E1512 has an ID in page 1
> register 3? Maybe the 88E1510 does not have an ID in page 1 register
> 3?
> 
> 	Andrew

Andrew,

Would Charles-Antoine be the better person to submit a patch
to fix the original problem then, since he tested the original
fiber support patch with 1512? I unfortunately don't have the
datasheet for 1512, and it does not seem to be available publicly.

Regards,
WingMan