Re: [PATCH v2] ARM: dts: imx7d-zii-rmu2: fix rgmii phy-mode for ksz9031 phy

[Fabio Estevam]

Hi Chris,

On Sat, Aug 22, 2020 at 11:25 PM Chris Healy <cphealy@xxxxxxxxx> wrote:
>
> From: Chris Healy <cphealy@xxxxxxxxx>
>
> Since commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the
> KSZ9031 PHY") the networking is broken on the imx7d-zii-rmu2 board.
>
> The end result is that network receive behaviour is marginal with lots of
> RX CRC errors experienced and NFS frequently failing.
>
> Quoting the explanation from Andrew Lunn in commit 0672d22a19244
> ("ARM: dts: imx: Fix the AR803X phy-mode"):
>
> "The problem here is, all the DTs were broken since day 0. However,
> because the PHY driver was also broken, nobody noticed and it
> worked. Now that the PHY driver has been fixed, all the bugs in the
> DTs now become an issue"
>
> Fix it by switching to phy-mode = "rgmii-id".
>
> Fixes: bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY")
> Signed-off-by: Chris Healy <cphealy@xxxxxxxxx>

Reviewed-by: Fabio Estevam <festevam@xxxxxxxxx>