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AM4378: SDWP issue

Part Number: AM4378

Hi,

I have one question regarding AM4378 with Linux.

My customer is using AM4378 processor. At present, customer has SD card issue. Customer says that the read/write of SD card is not stable.

According to my customer's information, UART Tx/Rx lines ( it is used for getting the log. ) are shared with SDWP. This is customer's artwork reason.

Customer thinks SD card issue is caused by SDWP input. Because customer is evaluating the system with logging. When logging, SDWP may be input the UART singal.

 I understand that SDWP situation may influence SD to write access. But I don't understand whether SDWP situation influence SD to read access or not.

Does also SD read access influence SDWP situation?

according to additonal customer's information, there is [rd/wt cm timeout error]  in log. Do you know the meaning of this error message?

Please advise me.

I appreciate your quick reply.

Best regards,

Michi