Orange pi r1 plus lts YT8531C failing

fconcha

I recently buught 5 orange pi r1 plus lts, for use in a simple SNMP server, the controlled board will be on the LAN porta and the WAN port will produce the SNP server.

I was working fine with the Openwrt 21.02.1 a couple of days, but today the YT8531C stoped working without any chance to go up.

I try to connect with "Ubuntu Image updated:2021-11-29" from the website and I couldn't get the interface to work|. I produced this System diagnosis http://ix.io/3IXA

I tryed with the "Openwrt updated:2021-11-29" and compared the dmesg with another "r1 plus lts"  and the difference in dmesg are messages like this:

board that is working:

1. ....
   
2. dwmmc_rockchip ff500000.dwmmc: All phases work, using default phase 0.
   
3. ....
   
4. dwmmc_rockchip ff500000.dwmmc: Successfully tuned phase to 210
   
5. ....
   
6. rk_gmac-dwmac ff540000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx

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board that is faliling

1. ...
   
2. dwmmc_rockchip ff500000.dwmmc: Successfully tuned phase to 91
   
3. ....
   
4. dwmmc_rockchip ff500000.dwmmc: Successfully tuned phase to 121
   
5. dwmmc_rockchip ff500000.dwmmc: Successfully tuned phase to 121
   
6. dwmmc_rockchip ff500000.dwmmc: Successfully tuned phase to 121
   
7. dwmmc_rockchip ff500000.dwmmc: Successfully tuned phase to 91
   
8. ....

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and this board keep jumping between 121 and 90.


Do you have any idea how can I continue debugging or reapair the interface? Any channel to get support for the board?

Best regards