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JSomi
JSomi
Associate
November 8, 2019
Question

STM32MP157C-DK2 Ethernet network is not working

  • November 8, 2019
  • 1 reply
  • 3213 views

We brought stm32Mp157C-DK2 board for our prototype testing. I can able to work on the A7 and M4 also ran examples. After 3 days of our work the Ethernet communication is not working. The LED's on the connector is not glowing. I check in Linux terminal with dmesg there is no controller detection . When I reboot the system and check the initial dmesg the output is like this on my linux host sytem using minicom:

root@stm32mp1:~# dmesg | grep eth

[  0.000000] psci: probing for conduit method from DT.

[  1.575436] stm32-dwmac 5800a000.ethernet: PTP uses main clock

[  1.579819] stm32-dwmac 5800a000.ethernet: no reset control found

[  1.586023] stm32-dwmac 5800a000.ethernet: No phy clock provided...

[  1.601232] stm32-dwmac 5800a000.ethernet: User ID: 0x40, Synopsys ID: 0x42

[  1.606799] stm32-dwmac 5800a000.ethernet:  DWMAC4/5

[  1.611707] stm32-dwmac 5800a000.ethernet: DMA HW capability register supported

[  1.619050] stm32-dwmac 5800a000.ethernet: RX Checksum Offload Engine supported

[  1.626354] stm32-dwmac 5800a000.ethernet: TX Checksum insertion supported

[  1.633237] stm32-dwmac 5800a000.ethernet: Wake-Up On Lan supported

[  1.639476] stm32-dwmac 5800a000.ethernet: TSO supported

[  1.644814] stm32-dwmac 5800a000.ethernet: Enable RX Mitigation via HW Watchdog Timer

[  1.652625] stm32-dwmac 5800a000.ethernet: TSO feature enabled

[  1.692950] usbcore: registered new interface driver cdc_ether

[  2.186587] optee: probing for conduit method from DT.

[  8.406969] stm32-dwmac 5800a000.ethernet eth0: Could not attach to PHY

[  8.441252] stm32-dwmac 5800a000.ethernet eth0: stmmac_open: Cannot attach to PHY (error: -19)

[  9.402998] using random self ethernet address

[  9.404040] using random host ethernet address

I tried of changing cable and checked switch everything is ok. Please suggest how to debug in this case to resolve the issue.

This topic has been closed for replies.

1 reply

PatrickF
PatrickF
Technical Moderator
November 8, 2019

Hello,

did you use started package or your own SW?

Maybe it is a good idea to Flash SD-Card with latest STM32MP15 ecosystem release v1.1.0

See https://wiki.st.com/stm32mpu/wiki/Getting_started/STM32MP1_boards/STM32MP157C-DK2/Let%27s_start/Populate_the_target_and_boot_the_image

If still not working, I suspect a faulty board.

Note that Ethernet LEDs behavior is the PHY (RTL8211F) default one:

0690X00000ArpIbQAJ.jpg

Here is my log, connected to a 100M network:

root@stm32mp1:~# dmesg | grep eth

[   0.000000] psci: probing for conduit method from DT.

[   1.521047] stm32-dwmac 5800a000.ethernet: PTP uses main clock

[   1.525439] stm32-dwmac 5800a000.ethernet: no reset control found

[   1.531693] stm32-dwmac 5800a000.ethernet: No phy clock provided...

[   1.548969] stm32-dwmac 5800a000.ethernet: User ID: 0x40, Synopsys ID: 0x42

[   1.554493] stm32-dwmac 5800a000.ethernet:  DWMAC4/5

[   1.559548] stm32-dwmac 5800a000.ethernet: DMA HW capability register supported

[   1.566776] stm32-dwmac 5800a000.ethernet: RX Checksum Offload Engine supported

[   1.574129] stm32-dwmac 5800a000.ethernet: TX Checksum insertion supported

[   1.581016] stm32-dwmac 5800a000.ethernet: Wake-Up On Lan supported

[   1.587283] stm32-dwmac 5800a000.ethernet: TSO supported

[   1.592580] stm32-dwmac 5800a000.ethernet: Enable RX Mitigation via HW Watchdog Timer

[   1.600449] stm32-dwmac 5800a000.ethernet: TSO feature enabled

[   1.635628] usbcore: registered new interface driver cdc_ether

[   2.133548] optee: probing for conduit method from DT.

[   8.637902] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found

[   8.698158] stm32-dwmac 5800a000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported

[   8.760343] stm32-dwmac 5800a000.ethernet eth0: registered PTP clock

[   8.792495] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

[   9.604900] using random self ethernet address

[   9.623627] using random host ethernet address

[  11.938258] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off

[  11.945364] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

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JSomi
JSomiAuthor
Associate
November 8, 2019

Thanks Patrick for your reply.

I used starter package and flashed. Starting the board is working fine I can able to connect to network. But after three days of working on the board, when I connect my Ethernet cable none of the LED's are blinking and no communication. Again I re-flashed the starter package but the issue remains unsolved.

How come Ethernet damages if its working already? I checked with multi-meter all the voltages and connections on the Ethernet controller and connector. But nothing seems to be faulty.

PatrickF
PatrickF
Technical Moderator
November 8, 2019

I don't know how it could occur, could be a board manufacturing issue (weak solder joint) or a short circuit somewhere during your tests.

As far as I know, we did not experience any reliability issues with this board. I think you were unlucky.

I suggest you to ask your reseller if he could manage a product exchange.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.Tip of the day: Try Sidekick STM32 AI agent, see here
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