Activate i.MX internal UARTs: Difference between revisions

From ArmadeusWiki
 
Line 5: Line 5:
* On i.MX27 UART controllers pins are multiplexed with other peripheral controllers. So configuration is a little more difficult.
* On i.MX27 UART controllers pins are multiplexed with other peripheral controllers. So configuration is a little more difficult.
<pre class="host">
<pre class="host">
$ make linux26-menuconfig
$ make linux-menuconfig
</pre>
</pre>
<pre class="config">
<pre class="config">

Latest revision as of 17:09, 4 September 2013

i.MXL (APF9328)

Nothing special to do, the 2 UARTS are activated by default.

i.MX27 (APF27)

  • On i.MX27 UART controllers pins are multiplexed with other peripheral controllers. So configuration is a little more difficult.
$ make linux-menuconfig

Device Drivers  --->
    Character devices  --->
        Serial drivers  --->
            [*] IMX serial port support
            [*]   Console on IMX serial port
            -*-   UART1
            [ ]   UART2
            -*-   UART3
            [ ]   UART4
            [ ]   UART5
            [ ]   UART6

Some UARTs will be preselected or won't be available, depending on the other devices configured or the baseboard used. (For example UART4 is not available on APF27Dev; indeed pins are used for USB1). 

$ make
  • Reflash your Linux kernel

Going further

Now you have activated your serial port, you can use them: Serial ports usage on Linux

Retrieved from "http://wikilegacy.armadeus.com/index.php?title=Activate_i.MX_internal_UARTs&oldid=12041"