From 6d4186b5740c2500c2e39fc9b90a36eb6ca50b1e Mon Sep 17 00:00:00 2001 From: Chris Healy Date: Sat, 22 Aug 2020 19:25:05 -0700 Subject: [PATCH] ARM: dts: imx7d-zii-rmu2: fix rgmii phy-mode for ksz9031 phy Since commit 7d105884856a ("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 6484489d55cc4 ("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: 7d105884856a ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY") Signed-off-by: Chris Healy Reviewed-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx7d-zii-rmu2.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx7d-zii-rmu2.dts b/arch/arm/boot/dts/imx7d-zii-rmu2.dts index e5e20b07f184b..7cb6153fc650b 100644 --- a/arch/arm/boot/dts/imx7d-zii-rmu2.dts +++ b/arch/arm/boot/dts/imx7d-zii-rmu2.dts @@ -58,7 +58,7 @@ <&clks IMX7D_ENET1_TIME_ROOT_CLK>; assigned-clock-parents = <&clks IMX7D_PLL_ENET_MAIN_100M_CLK>; assigned-clock-rates = <0>, <100000000>; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; phy-handle = <&fec1_phy>; status = "okay"; -- 2.39.5