netdev - Re: [PATCH v1] net: dsa: qca8k: implement DT-based ports <-> phy translation

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Date:   Tue, 5 Feb 2019 14:09:35 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Christian Lamparter <chunkeey@...il.com>
Cc:     netdev@...r.kernel.org, Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>
Subject: Re: [PATCH v1] net: dsa: qca8k: implement DT-based ports <-> phy
 translation

> The trick here is that priv->bus is not the internal
> bus instead it's set to the SoC's (external) mii bus in qca8k_sw_probe()).
> So this isn't a slave bus! And as stated in the qca8k, the the external
> and internal PHY bus are not mapped 1:1.
> 
> >From what I can tell from the datasheet, the QCA8337N does have
> dedicated MDIO master control register which is what is
> needed here.

Ah, O.K, i was missing that bit. So yes, export an MDIO bus to Linux,
as the mv88e6xxx does.

   Andrew