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ARM: dts: imx7d-zii-rmu2: fix rgmii phy-mode for ksz9031 phy

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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@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Chris Healy 2020-08-22 19:25:05 -07:00 committed by Shawn Guo
parent 2a6838d541
commit 5cbb80d523
1 changed files with 1 additions and 1 deletions
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2
arch/arm/boot/dts/imx7d-zii-rmu2.dts
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@ -58,7 +58,7 @@
<&clks IMX7D_ENET1_TIME_ROOT_CLK>; <&clks IMX7D_ENET1_TIME_ROOT_CLK>;
assigned-clock-parents = <&clks IMX7D_PLL_ENET_MAIN_100M_CLK>; assigned-clock-parents = <&clks IMX7D_PLL_ENET_MAIN_100M_CLK>;
assigned-clock-rates = <0>, <100000000>; assigned-clock-rates = <0>, <100000000>;
phy-mode = "rgmii"; phy-mode = "rgmii-id";
phy-handle = <&fec1_phy>; phy-handle = <&fec1_phy>;
status = "okay"; status = "okay";