我们这边购买的是AM3359zcz的开发板beaglebone，根据此开发板我们自己做了一块板卡，网口部分未动
使用的phy芯片是LAN8710A，与开发板一致，电路核对也一致
网口硬重启电路（断电、reset键）未出现问题，但软重启（reboot）就会出现问题，网口ping不通，寄存器地址不对
具体为：reboot后， alive寄存器的值发生了变化， 断电启动的值都是1， reboot后， 值就变成了4， 所以最后就是phy 0:00设备找不到。
硬重启是不会出现这个问题的，因为我们是前端设备，需要做远程操作，更改配置的话需要软重启
reboot的错误主要出现在这些语句上面：
[ 1.107635] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[ 1.114105] in davinci_mdio_reset, phy_mask = 4
[ 1.118835] davinci_mdio davinci_mdio.0: detected phy mask fffffffb
此时导致后面：
[ 12.157806] in phy_connect, bus_id = 0:00
[ 12.161987] PHY 0:00 not found
[ 12.165161] in cpsw_slave_open, slave->phy = -19
[ 12.169982] phy 0:00 not found on slave 0
正确的打印信息：
硬重启或者上电时为：
[ 1.107635] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[ 1.114105] in davinci_mdio_reset, phy_mask = 1
[ 1.118804] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
[ 1.126159] davinci_mdio.0: probed
[ 1.129730] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
后面：
[ 18.820312] in soft_reset, reset reg = 0......
[ 18.826904] in cpsw_ndo_open, priv->slave->data->phy_id = 0:00
[ 18.856353] in phy_connect, bus_id = 0:00
[ 18.860534] in phy_connect, start call to_phy_device = 0xcf9cf008
[ 18.866912] in phy_connect, phydev = 0xcf9cf000
[ 18.871978] in phy_connect, after phy_connect_direct, rc = 0
[ 18.877899] in cpsw_slave_open, slave->phy = -811798528
[ 18.883331]
[ 18.883331] CPSW phy found : id is : 0x7c0f1
附件是具体的打印信息
非常感谢
