netdev - Re: Is drivers/net/wan/lmc dead?

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Date:   Tue, 22 Mar 2022 09:54:49 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Krzysztof Hałasa <khalasa@...p.pl>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        Andrew Stanley-Jones <asj@...n.com>,
        Rob Braun <bbraun@....com>, Michael Graff <explorer@....com>,
        Matt Thomas <matt@...-software.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Zhao Qiang <qiang.zhao@....com>
Subject: Re: Is drivers/net/wan/lmc dead?

On Tue, Mar 22, 2022 at 9:14 AM Krzysztof Hałasa <khalasa@...p.pl> wrote:
> QUICC isn't exactly new :-) but it seems to be referenced by arm64 and
> PPC DTS files (so this isn't the original ~68020 QUICC).

Zhao Qiang from NXP added the fsl,ucc-hdlc node to arm64 ls1043a,
so I assume they actually support that device. The chip was introduced
in 2015, with a 15+ year product longevity cycle. The older arm32 based
ls1021 and the ls1088 also mention the quicc engine in the marketing
material but not the kernel sources, and I found no evidence of them
on any of the later layerscape chips.

       Arnd