The enet1 interface connect to a broadcom switch directly,there is no phy.
I set the port which on broadcom switch mode to RVMII ,and the enet1's configuration on imx6ul is :
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet1>;
bcm0-pwr-gpio = <&gpio1 7 1>;
bcm0-resetb-gpio = <&gpio5 2 0>;
phy-mode = "rev-mii";
status = "okay";
speed = <100>;
But now ,the imx6ul only can receive the packets,can't send out any packets.