netdev - Re: [PATCH] Documentation: net: phy: improve explanation when to specify the PHY ID

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Message-ID: <20170123203227.etk23xwiqs7rzktt@rob-hp-laptop>
Date:   Mon, 23 Jan 2017 14:32:27 -0600
From:   Rob Herring <robh@...nel.org>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     andrew@...n.ch, devicetree@...r.kernel.org, netdev@...r.kernel.org,
        davem@...emloft.net, f.fainelli@...il.com, mark.rutland@....com
Subject: Re: [PATCH] Documentation: net: phy: improve explanation when to
 specify the PHY ID

On Sun, Jan 22, 2017 at 05:41:32PM +0100, Martin Blumenstingl wrote:
> The old description basically read like "ethernet-phy-idAAAA.BBBB" can
> be specified when you know the actual PHY ID. However, specifying this
> has a side-effect: it forces Linux to bind to a certain PHY driver (the
> one that matches the ID given in the compatible string), ignoring the ID
> which is reported by the actual PHY.
> Whenever a device is shipped with (multiple) different PHYs during it's
> production lifetime then explicitly specifying
> "ethernet-phy-idAAAA.BBBB" could break certain revisions of that device.
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> ---
> Thanks to Andrew Lunn for pointing the documentation issue out to me in:
> http://lists.infradead.org/pipermail/linux-amlogic/2017-January/002141.html
> 
> 
>  Documentation/devicetree/bindings/net/phy.txt | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

Acked-by: Rob Herring <robh@...nel.org>