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Problem of i.MX6ULL UART transmit-receive by interrupt

Question asked by Jimmy Li on Apr 20, 2020
Latest reply on Apr 21, 2020 by Jimmy Li

Hi, 

      I have a problem about the uart of i.mx6ull working in interrupt mode.

     1>condition

         Linux version: L4.1.15

         Work flow: fast transmit or receive by interrupt.

 

     2>result

         a. when uart in work flow after some time, it will cause "kernel panic";

         b. error log:

            Unhandled fault : external abort on non-linefetch (0x1008) at 0xc88f4000

 

     How can I fix it ?

     Thanks.

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