UBOOT READ RTL8306E PHY Register WITH MII

hisilicon # 
hisilicon # 
hisilicon # mii info              // 默认网络没有使能，所以读取不到网卡硬件信息
NULL device name!
...................................
NULL device name!
hisilicon # 
hisilicon # 
hisilicon # ping 192.168.200.138   // 执行网络操作，使能PHY后才能读到RTL8306E的硬件信息
MAC:   00-00-DC-21-D3-C2
host 192.168.200.138 is alive
hisilicon # mii info
PHY 0x00: OUI = 0x0732, Model = 0x05, Rev = 0x02, 100baseT, FDX
PHY 0x01: OUI = 0x0732, Model = 0x05, Rev = 0x02, 100baseT, FDX
PHY 0x02: OUI = 0x0732, Model = 0x05, Rev = 0x02,  10baseT, HDX
PHY 0x03: OUI = 0x0732, Model = 0x05, Rev = 0x02,  10baseT, HDX
PHY 0x04: OUI = 0x0732, Model = 0x05, Rev = 0x02,  10baseT, HDX
PHY 0x05: OUI = 0x0732, Model = 0x05, Rev = 0x02, 100baseT, FDX
PHY 0x06: OUI = 0x0732, Model = 0x05, Rev = 0x02, 100baseT, FDX
hisilicon # 
hisilicon # mii read 0 0         // PHY_ID_0__REG0 处于网络连接状态时读到的控制信息
3100
hisilicon # mii read 0 1         // PHY_ID_0__REG1 处于网络连接状态时读到的状态信息
786D
hisilicon # mii read 0 2         // ID1
001C
hisilicon # mii read 0 3         // ID2
C852
hisilicon # mii read 1 0         // PHY_ID_1__REG0 处于无网络连接状态时读到的控制信息
1000
hisilicon # mii read 1 1         // PHY_ID_1__REG1 处于无网络连接状态时读到的状态信息
7849
hisilicon # mii read 1 0         // PHY_ID_1__REG0 处于有网络连接状态时读到的控制信息
3100
hisilicon # mii read 1 1         // PHY_ID_1__REG1 处于有网络连接状态时读到的状态信息
7869

REG0:
5432109876543210-----------RW
0001000000000000  0x1000
0011000100000000  0x3100---DEFAULT
--||---|--------------------Duplex Mode  : 1: Full duplex operation/0: Half duplex operation
--||------------------------Auto Negotiation Enable: 1: Enable auto-negotiation process /0: Disable auto-negotiation process   
--|-------------------------Speed Select : 1: 100Mbps / 0: 10Mbps

REG1:
5432109876543210------------RO
0111100001001001  0x7849----DEFAULT
0111100001101001  0x7869
0111100001101101  0x786D
----------|--|--------------Link Status:  1: Link is established. / 0: Link has failed
----------|-----------------Auto-negotiate Complete: 1: Auto-negotiation process completed.

//  内核驱动RTL8306E PHY的打印
[    1.429534] STMMAC MII Bus: probed
[    1.432946] eth0: PHY ID 001cc852 at 0 IRQ -6 (1:00) active
[    1.438511] eth0: PHY ID 001cc852 at 1 IRQ 0 (1:01)
[    1.443385] eth0: PHY ID 001cc852 at 2 IRQ 0 (1:02)
[    1.448255] eth0: PHY ID 001cc852 at 3 IRQ 0 (1:03)
[    1.453127] eth0: PHY ID 001cc852 at 4 IRQ 0 (1:04)
[    1.457996] eth0: PHY ID 001cc852 at 5 IRQ 0 (1:05)
[    1.462868] eth0: PHY ID 001cc852 at 6 IRQ 0 (1:06)
[    1.468037] stmmac_reset: RESET COMPLETE!
//  内核驱动RTL8306E PHY的打印