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imx6q configuration WEIM bus for ST16C554 expand UART ,Resive data error

Question asked by AL ee on Mar 7, 2019
Latest reply on Mar 11, 2019 by AL ee

Hi,community

     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!!

Alee

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