linux-kernel - Re: [PATCH v5 10/10] net: stmmac: dwmac-sun8i: Handle integrated/external MDIOs

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Message-ID: <20170911201920.GA5983@lunn.ch>
Date:   Mon, 11 Sep 2017 22:19:20 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Corentin Labbe <clabbe.montjoie@...il.com>
Cc:     robh+dt@...nel.org, mark.rutland@....com,
        maxime.ripard@...e-electrons.com, wens@...e.org,
        linux@...linux.org.uk, catalin.marinas@....com,
        will.deacon@....com, peppe.cavallaro@...com,
        alexandre.torgue@...com, f.fainelli@...il.com,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 10/10] net: stmmac: dwmac-sun8i: Handle
 integrated/external MDIOs

> Even with CLK_BUS_EPHY/RST_BUS_EPHY enabled, the MAC reset timeout.
> So no the CLK/RST are really for the PHY.

Thanks for trying that.

You said it was probably during scanning of the bus it times out. What
address is causing the timeout? 0 or 1? If the internal bus can only
have one PHY on it, maybe we need to set bus->phy_mask to 0x1?

   Andrew