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how to enhance uart baud rate for imx6

Question asked by Mostion M on Sep 21, 2017
Latest reply on Sep 25, 2017 by Rita Wang

Hi all,

   There is a issue about your BSP for IMX6, which kernel version is 3.10.7. We just want to use one of the uart port for high baud rate communication, but if we increase it above 115200, the processor seemed can't receive all bytes timely and the kernel returns "Rx FIFO overrun" random. I just want to know, how can I use 460800 baud rate normally without flow control? As I said, our platform designed it without any flow controls, just RX/TX line connect.

   BTW, we have another platform which use IMX535 core for same usefulness, it looks OK. Is it useful that change the configuration of uart clock? I believe that IMX6 could run higher baud rate than IMX535 under the same conditions, right?

 

   expect some suggestions.

 

Best regards,

Mostion

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