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

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Date:   Thu, 21 Mar 2019 08:42:41 +0000
From:   Abel Vesa <abel.vesa@....com>
To:     Fabio Estevam <festevam@...il.com>
CC:     Steve Twiss <stwiss.opensource@...semi.com>,
        Andrew Lunn <andrew@...n.ch>, 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

On 19-03-20 14:04:42, Fabio Estevam wrote:
> Hi Steve,
> 
> [Adding Andrew]
> 
> On Wed, Mar 20, 2019 at 1:03 PM Steve Twiss
> <stwiss.opensource@...semi.com> wrote:
> >
> > Hi Fabio,
> >
> > On 20 March 2019 12:17, Fabio Estevam wrote:
> > > 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.
> >
> > The PHY used on the Freescale i.MX6Q/DL SABRE boards is qualified as
> > 'rgmii' instead of 'rgmii-id'.
> >
> > Can that be read two ways?
> > I meant the phy-mode is currently qualified as 'rgmii' instead of what it
> > should be: 'rgmii-id'.
> 
> Thanks for the clarification.
> 
> >
> > [...]
> >
> > > > 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.
> >
> > I didn't put a Fixes tag in because I find this patch fixes v5.1-rc1 (which I see as broken).
> > But the patch is not needed in v5.0 because I see that as working.
> > So didn't see the need for a Cc: stable.
> 
> 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.

> 
> Thanks