AnsweredAssumed Answered

how to enable uart4

Question asked by mingming yuan on Mar 28, 2015
Latest reply on Apr 16, 2015 by Rita Wang

we use mx6q sabresd board and run linux 3.0.35, now I want to use uart4,but I can't find ttymxc3 in /dev/

I read porting guide for this, I add follow code in board.c, after add this code, I can find ttymxc3 in /dev, but this uart can't send or receive data.

// yuanmm add uart begin
imx6q_add_imx_uart(1, NULL);
imx6q_add_imx_uart(3, NULL);
imx6q_add_imx_uart(4, NULL);
// yuanmm add uart end


test step:


cat /dev/ttymxc3 &

echo ymm > /dev/ttymxc3