The PHY AR8031 must add both tx and rx delay. But PHY driver disable tx/rx delay by default in Commit 6d4cd041f0af(net: phy: at803x: disable delay only for RGMII mode), which brokes i.MX6SX sdb board networking. So enable rgmii-txid phy mode to enable the tx/rx delay. Signed-off-by: Fugang Duan <fugang.duan@xxxxxxx> --- arch/arm/boot/dts/imx6sx-sdb.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/imx6sx-sdb.dtsi b/arch/arm/boot/dts/imx6sx-sdb.dtsi index 08ede56..865528b 100644 --- a/arch/arm/boot/dts/imx6sx-sdb.dtsi +++ b/arch/arm/boot/dts/imx6sx-sdb.dtsi @@ -191,7 +191,7 @@ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enet1>; phy-supply = <®_enet_3v3>; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; phy-handle = <ðphy1>; phy-reset-gpios = <&gpio2 7 GPIO_ACTIVE_LOW>; status = "okay"; @@ -213,7 +213,7 @@ &fec2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_enet2>; - phy-mode = "rgmii"; + phy-mode = "rgmii-id"; phy-handle = <ðphy2>; status = "okay"; }; -- 2.7.4