netdev - Re: [RESENT PATCH net--stat 1/1] net: ethernet: fec: Revert "net: ethernet: fec: Replace interrupt driven MDIO with polled IO"

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Message-ID: <20200727120545.GN1661457@lunn.ch>
Date:   Mon, 27 Jul 2020 14:05:45 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Chris Healy <cphealy@...il.com>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Fugang Duan <fugang.duan@....com>,
        "David S. Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Martin Fuzzey <martin.fuzzey@...wbird.group>
Subject: Re: [RESENT PATCH net--stat 1/1] net: ethernet: fec: Revert "net:
 ethernet: fec: Replace interrupt driven MDIO with polled IO"

On Sun, Jul 26, 2020 at 08:01:25PM -0700, Chris Healy wrote:
> It appears quite a few boards were affected by this micrel PHY driver change:
> 
> 2ccb0161a0e9eb06f538557d38987e436fc39b8d
> 80bf72598663496d08b3c0231377db6a99d7fd68
> 2de00450c0126ec8838f72157577578e85cae5d8
> 820f8a870f6575acda1bf7f1a03c701c43ed5d79
> 
> I just updated the phy-mode with my board from rgmii to rgmii-id and
> everything started working fine with net-next again:

Hi Chris

Is this a mainline supported board? Do you plan to submit a patch?

Laurent, does the change also work for your board? This is another one
of those cases were a bug in the PHY driver, not respecting the
phy-mode, has masked a bug in the device tree, using the wrong
phy-mode. We had the same issue with the Atheros PHY a while back.

   Andrew