如何去解决ping服务器报错的问题

正常进入uboot指令阶段，设置好addrip serverip，此时ping服务器发现报错FEC1 Waiting for PHY auto negotiation to complete......... TIMEOUT !。之前操作均是参考手册执行。
以下是uboot 环境参数打印

baudrate=115200
boot_fdt=try
bootcmd=if mmc rescan; then if run loadbootscript; then run bootscript; else if test ${bootdev} = sd1; then echo update firmware.........;run update_from_sd;else echo mmc boot..........;if run loadimage; then run mmcboot; else run netboot; fi; fi; fi; else run netboot; fi;
bootcmd_mfg=run mfgtool_args;bootz ${loadaddr} ${initrd_addr} ${fdt_addr};
bootdelay=3
bootdev=mmc2
bootscript=echo Running bootscript from mmc ...; source
console=ttymxc0
ethact=FEC1
ethaddr=00:E0:0C:BC:E5:60
ethprime=FEC
fdt_addr=0x83000000
fdt_file=imx6ul-14x14-evk.dtb
fdt_high=0xffffffff
image=zImage
initrd_addr=0x83800000
initrd_high=0xffffffff
ip_dyn=yes
ipaddr=192.168.10.188
loadaddr=0x80800000
loadbootscript=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};
loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}
loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}
logoflag=70
mfgtool_args=setenv bootargs console=${console},${baudrate} rdinit=/linuxrc g_mass_storage.stall=0 g_mass_storage.removable=1 g_mass_storage.idVendor=0x066F g_mass_storage.idProduct=0x37FF g_mass_storage.iSerialNumber="" clk_ignore_unused
mmcargs=setenv bootargs console=${console},${baudrate} calibrate=${calibrate} cma=320M root=${mmcroot}
mmcautodetect=yes
mmcboot=echo Booting from mmc ...; run mmcargs; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if run loadfdt; then bootz ${loadaddr} - ${fdt_addr}; else if test ${boot_fdt} = try; then bootz; else echo WARN: Cannot load the DT; fi; fi; else bootz; fi;
mmcdev=1
mmcpart=1
mmcroot=/dev/mmcblk1p2 rootwait rw
netargs=setenv bootargs console=${console},${baudrate} root=/dev/nfs ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp
netboot=echo Booting from net ...; run netargs; if test ${ip_dyn} = yes; then setenv get_cmd dhcp; else setenv get_cmd tftp; fi; ${get_cmd} ${image}; if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if ${get_cmd} ${fdt_addr} ${fdt_file}; then bootz ${loadaddr} - ${fdt_addr}; else if test ${boot_fdt} = try; then bootz; else echo WARN: Cannot load the DT; fi; fi; else bootz; fi;
panel=TFT70AB
script=boot.scr
serverip=192.168.10.227
splashimage=0x90000000
update_emmc=mmc rescan;fatload mmc 0 ${loadaddr} /bin/${image}; fatload mmc 0 ${initrd_addr} /bin/ramdisk.img.u; fatload mmc 0 ${fdt_addr} /bin/${fdt_file}; set bootargs console=${console},${baudrate} cma=320M rdinit=/linuxrc; bootz ${loadaddr} ${initrd_addr} ${fdt_addr};
update_from_sd=run update_emmc;
Environment size: 2564/8188 bytes