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From:   Fabio Estevam <festevam@gmail.com>
Date:   Thu, 21 Mar 2019 08:17:01 -0300
Message-ID: <CAOMZO5Cz0A19P9E61dy79BFF+V2WsAjobqQ1g9TeiJSCY2Nt4A@mail.gmail.com>
Subject: Re: [PATCH] ARM: dts: imx6qdl-sabresd: change phy-mode to use rgmii-id
To:     Abel Vesa <abel.vesa@nxp.com>
Cc:     Steve Twiss <stwiss.opensource@diasemi.com>,
        Andrew Lunn <andrew@lunn.ch>, Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        dl-linux-imx <linux-imx@nxp.com>,
        DEVICETREE <devicetree@vger.kernel.org>,
        LINUX-ARM-KERNEL <linux-arm-kernel@lists.infradead.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Support Opensource <Support.Opensource@diasemi.com>
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Hi Abel,

On Thu, Mar 21, 2019 at 5:42 AM Abel Vesa <abel.vesa@nxp.com> wrote:

> > It seems we have other boards that need to be fixed and we can not
> > have an old dtb with functional Ethernet with a new kernel.
> >
> > Does anyone know if this issue is AR8031 specific?
>
> I can confirm the same fix is works on imx6sx too.

imx6sx-sabresd also uses an AR8031 Ethernet PHY.

I also tested that changing the phy-mode to "rgmii-id" fixes Ethernet
on pico-imx7d with AR8035.

So yes, we currently have lots of broken dtb's in mainline and I am
wondering what is the proper fix here.

Does anyone know what was the kernel commit that introduced such regressions?