mdio命令读取88x3310万兆phy寄存器

=> mdio
mdio - MDIO utility commands

Usage:
mdio list                       - List MDIO buses
mdio read [.] - read PHY's register at .
mdio write [.] - write PHY's register at .
mdio rx [.] - read PHY's extended register at .
mdio wx [.] - write PHY's extended register at .
may be:
     
   
   
, and may be ranges, e.g. 1-5.4-0x1f.

=> mdio list
FSL_MDIO0:
FSL_MDIO1:
4 - Generic 10G PHY <--> DPMAC14@xgmii
8 - Generic 10G PHY <--> DPMAC13@xgmii
=> mii dev FSL_MDIO1

mdio通过MMD读取id寄存器

 devad：device设备地址

=> mdio read DPMAC13@xgmii 3.2
Reading from bus FSL_MDIO1
PHY at address 8:
3.2 - 0x2b
=> mdio read DPMAC13@xgmii 3.3
Reading from bus FSL_MDIO1
PHY at address 8:
3.3 - 0x9ab