linux-kernel - Re: [PATCH] ARM: dts: imx6qdl-sabresd: change phy-mode to use rgmii-id

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Message-ID: <20190321115025.GH2900@lunn.ch>
Date:   Thu, 21 Mar 2019 12:50:25 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Steve Twiss <stwiss.opensource@...semi.com>
Cc:     Fabio Estevam <festevam@...il.com>, Abel Vesa <abel.vesa@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        dl-linux-imx <linux-imx@....com>,
        DEVICETREE <devicetree@...r.kernel.org>,
        LINUX-ARM-KERNEL <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Support Opensource <Support.Opensource@...semi.com>
Subject: Re: [PATCH] ARM: dts: imx6qdl-sabresd: change phy-mode to use
 rgmii-id

> I bisected to the original breakage (for the NFS rootfs) back to this commit:
> commit 13d0ab6750b20957ac1466da4e44dc0af746ff28

I don't think that is the correct patch. Yes, it broke here, but that
was a different problem. 

I think the real commit is:
6d4cd041f0af ("net: phy: at803x: disable delay only for RGMII mode")

That commit contains a fix for broken behaviour in the PHY driver,
when then also causes broken DTs to fail.

	     Andrew