netdev - Re: realtek PHY commit bbc4d71d63549 causes regression

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Date:   Sat, 17 Oct 2020 16:46:23 +0200
From:   Ard Biesheuvel <ardb@...nel.org>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     "open list:BPF JIT for MIPS (32-BIT AND 64-BIT)" 
        <netdev@...r.kernel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Willy Liu <willy.liu@...ltek.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Sasha Levin <sashal@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Masahisa Kojima <masahisa.kojima@...aro.org>
Subject: Re: realtek PHY commit bbc4d71d63549 causes regression

On Sat, 17 Oct 2020 at 16:44, Andrew Lunn <andrew@...n.ch> wrote:
>
> On Sat, Oct 17, 2020 at 04:20:36PM +0200, Ard Biesheuvel wrote:
> > Hello all,
> >
> > I just upgraded my arm64 SynQuacer box to 5.8.16 and lost all network
> > connectivity.
>
> Hi Ard
>
> Please could you point me at the DT files.
>
> > This box has a on-SoC socionext 'netsec' network controller wired to
> > a Realtek 80211e PHY, and this was working without problems until
> > the following commit was merged
>
> It could be this fix has uncovered a bug in the DT file. Before this
> fix, if there is an phy-mode property in DT, it could of been ignored.
> Now the phy-handle property is correctly implemented. So it could be
> the DT has the wrong value, e.g. it has rgmii-rxid when maybe it
> should have rgmii-id.
>

This is an ACPI system. The phy-mode device property is set to 'rgmii'