How Can I solve my ethernet problem? (ethernet not working)

[SPark.15]

Hello guys.

I have configured ethernet on STM32MP157F using Microchip's LAN8720AI-CP.

I base my image on st-image-core of Distribution Package. And dts is configured using CubeMX(meta-st-stm32mp-addons).

Currently, it appears as if ethernet is connected as shown in the picture below.

[ 0.000000] psci: probing for conduit method from DT.
[ 1.235904] usbcore: registered new interface driver cdc_ether
[ 2.758680] stm32-dwmac 5800a000.ethernet: PTP uses main clock
[ 2.763159] stm32-dwmac 5800a000.ethernet: no reset control found
[ 2.769206] stm32-dwmac 5800a000.ethernet: No phy clock provided...
[ 2.776103] stm32-dwmac 5800a000.ethernet: User ID: 0x40, Synopsys ID: 0x42
[ 2.782483] stm32-dwmac 5800a000.ethernet: DWMAC4/5
[ 2.787398] stm32-dwmac 5800a000.ethernet: DMA HW capability register supported
[ 2.794742] stm32-dwmac 5800a000.ethernet: RX Checksum Offload Engine supported
[ 2.802082] stm32-dwmac 5800a000.ethernet: TX Checksum insertion supported
[ 2.808934] stm32-dwmac 5800a000.ethernet: Wake-Up On Lan supported
[ 2.815234] stm32-dwmac 5800a000.ethernet: TSO supported
[ 2.820552] stm32-dwmac 5800a000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[ 2.828396] stm32-dwmac 5800a000.ethernet: device MAC address 4a:d6:e6:66:9a:94
[ 2.835731] stm32-dwmac 5800a000.ethernet: TSO feature enabled
[ 10.630088] stm32-dwmac 5800a000.ethernet eth0: PHY [stmmac-0:01] driver [SMSC LAN8710/LAN8720]
[ 10.708890] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found
[ 10.800503] stm32-dwmac 5800a000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported
[ 10.808475] stm32-dwmac 5800a000.ethernet eth0: registered PTP clock
[ 10.840726] stm32-dwmac 5800a000.ethernet eth0: configuring for phy/rmii link mode
[ 11.450968] using random self ethernet address
[ 11.453968] using random host ethernet address
[ 12.972676] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[ 12.980117] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

eth0 Link encap:Ethernet HWaddr F2:1D:22:8E:04:45 
 inet addr:192.168.0.51 Bcast:192.168.0.255 Mask:255.255.255.0
 inet6 addr: fe80::f01d:22ff:fe8e:445/64 Scope:Link
 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
 RX packets:608 errors:0 dropped:0 overruns:0 frame:0
 TX packets:72 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000 
 RX bytes:164901 (161.0 KiB) TX bytes:15434 (15.0 KiB)
 Interrupt:38 Base address:0x4000 

However, ssh connection to this board is not available in the same network from other PC.

(ssh : connect to host 192.168.0.51 port 22 : No route to host)

ping command also same.

PING 192.168.0.51 (192.168.0.51) 56(84) bytes of data.
From 192.168.0.43 icmp_seq=1 Destination Host Unreachable
From 192.168.0.43 icmp_seq=2 Destination Host Unreachable
From 192.168.0.43 icmp_seq=3 Destination Host Unreachable

How Can i debug this problem?

[PatrickF]

Hi,

did you progress meanwhile ?

From the console on your board, did you succeed to ping other device or website ?

As far as I see in the first part of your post, all seems ok.

Regards,

[SPark.15]

Hi,

​

I've tried changing the BSP several times, but nothing happens.

​

I think it's a HW problem.

But it might be a BSP issue, so we're checking.

​

Is there any other way I might try?

​

Regards,​

[PatrickF]

Hi,

Are you sure it is not some setting on your PC which avoid to access the board (e.g. VPN, specific company security settings, etc..) ?

Have you tried vice versa, i.e. ping from the board to a PC ? between two boards ?

If your network allow internet access, is the following commands works ?

• ping www.st.com
• apt-get update

Did you check you schematics and DT between AN5031 and the recommended DT (depend on your HW choices):

• RMII with Crystal on PHY (Reference clock (standard RMII clock name) is provided by a Phy Crystal)
• RMII with 25MHz on ETH_CLK (no PHY Crystal), REF_CLK from PHY (Reference clock (standard RMII clock name) is provided by a PHY)
• RMII with 50MHz on ETH_CLK (no PHY Crystal), internal REF_CLK from RCC (Reference clock (standard RMII clock name) is provided by a RCC SoC internal clock)

Some HW problem could exist on your board (e.g. between PHY and RJ45 like mixed up pairs).

Regards.