Hi,
I am using i.MX6ul core processor,use uart2 in 230400Baud,sometimes get error imx-uart 21e8000.serial: Rx FIFO overrun.
following dmesg, I found this error msg followed Bus freq set to 24000000 msg。So i guess when the data transmission in UART ,this time the Bus freq reduced,then RX FIFO overrun.Could someone help me to fixed.
Hi jiefeng
to avoid uart overruns one can try flow control.
To disable the bus frequency driver use the following command:
echo 0 > /sys/bus/platform/drivers/imx6_busfreq/busfreq.13/enable
Also please check advices on
https://community.nxp.com/thread/429536
Best regards
igor
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