UART RX

[tudouboss]

I setup the Baud Rate to 4800，and connected a peripheral with our UART.the peripheral send  handshake packages to UART,frequency was 10HZ，the length of the data were 10 bytes.But I found a confused phenomenon is that the data were not print on time，the data were print after 40 s. is that i need to change some configures for uart?why?

[Rita_Wang]

Which products are you using?

[tudouboss]

IMX6U6AVM08AC(IMX6DL DDR_2G EMMC_4G)

kernel version：3.14.52

Uboot version：u-boot-2016.03

when I used the cmd "cat /dev/ttymxc3" at upper status,I found that the terminal printf "rx fifo overrun".However, the data transmission interval is 100ms, and each frame of data transmission is less than 20ms.In this case, what state is it that the register cannot be set?

tks