Re: [RESEND PATCH] ARM: dts: keystone-k2g-evm: fix rgmii phy-mode for ksz9031 phy

[Arnd Bergmann]

On Fri, Jul 24, 2020 at 11:57 PM santosh.shilimkar@xxxxxxxxxx
<santosh.shilimkar@xxxxxxxxxx> wrote:
> On 7/24/20 2:42 PM, Grygorii Strashko wrote:
> > Since commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the
> > KSZ9031 PHY") the networking is broken on keystone-k2g-evm board.
> >
> > The above board have phy-mode = "rgmii-id" and it is worked before because
> > KSZ9031 PHY started with default RGMII internal delays configuration (TX
> > off, RX on 1.2 ns) and MAC provided TX delay by default.
> > After above commit, the KSZ9031 PHY starts handling phy mode properly and
> > enables both RX and TX delays, as result networking is become broken.
> >
> > Fix it by switching to phy-mode = "rgmii-rxid" to reflect previous
> > behavior.
> >
> > Cc: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
> > Cc: Andrew Lunn <andrew@xxxxxxx>
> > Cc: Philippe Schenker <philippe.schenker@xxxxxxxxxxx>
> > Fixes: bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY")
> > Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
> > ---
> > Fix for one more broken TI board with KSZ9031 PHY.
> Can you please apply this patch to your v5.8 fixes branch and send it
> upstream ? Without the fix K2G EVM board is broken with v5.8.
>
> Am hoping you can pick this up with pull request since it just one
> patch.

I've applied it now, but would point out that it's generally better if you could
forward the patch to soc@xxxxxxxxxx with your Signed-off-by if you come
across a similar patch again. That way it ends up in patchwork, and we
are more likely to pick it up quickly.

       Arnd