netdev - regression from: net: phy: marvell: Avoid unnecessary soft reset

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Message-ID: <5ddf46b1-1959-832d-c6a5-86d8f93dc409@electromag.com.au>
Date:   Fri, 15 Mar 2019 16:52:51 +0800
From:   Phil Reid <preid@...ctromag.com.au>
To:     Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        dongsheng.wang@...-semitech.com, cphealy@...il.com,
        clemens.gruber@...ruber.com, hkallweit1@...il.com, nbd@....name,
        harini.katakam@...inx.com
Subject: regression from: net: phy: marvell: Avoid unnecessary soft reset

G'day All,

I've just update from kernel 4.19 to 5.0 on a custom board that has a marvell
dsa mv88e6085 and the phy on the mv88e6085 will only connect at 10Mb/s with
the above mentioned patch applied.

Bisecting the issue lead me to the following patch.

d6ab93364734bd (net: phy: marvell: Avoid unnecessary soft reset)

Revert the patch, and the associated build fix
4b1bd6976945417 (net: phy: marvell: Fix build.)
restores connections to 1Gb/s.

Anyone have any thoughts as to the correct fix?

-- 
Regards
Phil