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Date:   Wed, 19 Feb 2020 16:26:14 +0100
From:   Andrew Lunn <>
To:     Vladimir Oltean <>
Subject: Re: [PATCH v2 net-next/devicetree 2/5] net: dsa: felix: Use

On Wed, Feb 19, 2020 at 05:12:56PM +0200, Vladimir Oltean wrote:
> From: Vladimir Oltean <>
> phy-mode = "gmii" is confusing because it may mean that the port
> supports the 8-bit-wide parallel data interface pinout, which it
> doesn't.
> It may also be confusing because one of the "gmii" internal ports is
> actually overclocked to run at 2.5Gbps (even though, yes, as far as the
> switch MAC is concerned, it still thinks it's gigabit).
> So use the phy-mode = "internal" property to describe the internal ports
> inside the NXP LS1028A chip (the ones facing the ENETC). The change
> should be fine, because the device tree bindings document is yet to be
> introduced, and there are no stable DT blobs in use.
> Signed-off-by: Vladimir Oltean <>

Reviewed-by: Andrew Lunn <>


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