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

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Message-ID: <CAOMZO5AHzQJzz3vd5MzYgSSxzPjU9xan1dFh9473BXeiRCOzzg@mail.gmail.com>
Date:   Wed, 20 Mar 2019 09:16:49 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Steve Twiss <stwiss.opensource@...semi.com>
Cc:     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>,
        NXP Linux Team <linux-imx@....com>,
        DEVICETREE <devicetree@...r.kernel.org>,
        LINUX-ARM-KERNEL <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Dialog Opensource Support <support.opensource@...semi.com>
Subject: Re: [PATCH] ARM: dts: imx6qdl-sabresd: change phy-mode to use rgmii-id

Hi Steve,

On Wed, Mar 20, 2019 at 9:06 AM Steve Twiss
<stwiss.opensource@...semi.com> wrote:
>
> The PHY used on the Freescale i.MX6Q/DL SABRE boards is qualified as
> 'rgmii' instead of 'rgmii-id'. Meaning the RX and TX delays that were

This patch declares it as 'rgmii-id', which contradicts the commit log.

> previously added by the MAC when required, but are now provided
> internally by the PHY (and the MAC should no longer add the RX or TX
> delays in this case).
>
> This patch fixes the network problems seen on the Freescale i.MX6Q/DL

Please provide a Fixes tag. It would be good to know if this fix needs
to be applied to older kernels.