启动的时候MDIO可以识别PHY ID，REFCLK也有50M的波形

下面是启动的log：

[    1.572012] libphy: mdio: probed

[    1.574580] mdio_bus mdio-bus@emac0: /soc/emac0/mdio-bus@emac0/ethernet-phy@0 has invalid PHY address 

[    1.584351] [emac_phy_connect][3204] connected mac emac0 to PHY at mdio-bus@emac0:00 [uid=11112222, driver=SStar 10/100 Ethernet Phy]  

[    1.596808] MSYS: DMEM request: [emac1_buff]:0x00060812  

[    1.601317] MSYS: DMEM request: [emac1_buff]:0x00060812 success, CPU phy:@0x23C50000, virt:@0xC3C50000

[    1.610988] libphy: mdio: probed

[    1.613573] mdio_bus mdio-bus@emac1: /soc/emac1/mdio-bus@emac1/ethernet-phy@1 has invalid PHY address

[    1.715158] [PHY] Increased Tx CLK driving for daughter board... ip101a_g_config_init ## 186 

[    1.815153] [PHY] Increased Tx CLK driving for daughter board... ip101a_g_config_init ## 186

[    1.842758] [emac_phy_connect][3204] connected mac emac1 to PHY at mdio-bus@emac1:01 [uid=02430c54, driver=ICPlus IP101A/G]

原理图（其中：R91 NC R93 NC）：

REFCLK

启动到Linux rootfs后使用dhcp无法获取IP，该如何调试呢？