I configuration the imx6q WEIM bus and connected the ST16C554 to expand 4 uart port , then I used the serial port to resive data,it's possible to get the wrong data such I send the data is "0x55",but i got the data "0x00"(if I got the error data it's always 0x00),most time i can get the correct data "0x55".
My board is I.MX6Q,and the linux kernel is 3.14.52
Someone met the same problem? and could you give me some idear
thanks very much!!