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 <phydev> [<devad>.]<reg> - read PHY's register at <devad>.<reg>
mdio write <phydev> [<devad>.]<reg> <data> - write PHY's register at <devad>.<reg>
mdio rx <phydev> [<devad>.]<reg> - read PHY's extended register at <devad>.<reg>
mdio wx <phydev> [<devad>.]<reg> <data> - write PHY's extended register at <devad>.<reg>
<phydev> may be:
   <busname>  <addr>
   <addr>
   <eth name>
<addr> <devad>, and <reg> 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 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