Tool/software: Linux
Hello Team,
I am working on our custom board based on am5728 ,we have taken reference from am57xx-evm but use only one Ethernet interface instead of two.
I am facing issue while bringup, which is no link found
root@am57xx-evm:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 1
Transceiver: external
Auto-negotiation: on
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000000 (0)
Link detected: no
I have modified the kernel and u-boot and remove the eth1 from the source. in uboot i am able to read write the phy registers using mdio below is the result before connecting the link:
=> mdio listethernet@48484000:1 - Generic PHY <--> ethernet@48484000
=> mii read 1 0-10
addr=01 reg=00 data=1140
addr=01 reg=01 data=7949
addr=01 reg=02 data=0022
addr=01 reg=03 data=1622
addr=01 reg=04 data=01E1
addr=01 reg=05 data=0000
addr=01 reg=06 data=0004
addr=01 reg=07 data=2001
addr=01 reg=08 data=0000
addr=01 reg=09 data=0300
addr=01 reg=0a data=0000
addr=01 reg=0b data=0000
addr=01 reg=0c data=0000
addr=01 reg=0d data=0000
addr=01 reg=0e data=0000
addr=01 reg=0f data=3000
addr=01 reg=10 data=0000
After connecting the Ethernet link there is no change in "mii" result, what can be the possible issue and how i can debug this further .
Regards,
Shweta
