Difference between revisions of "Activate i.MX internal UARTs"

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m (→‎i.MX27 (APF27))
 
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==i.MXL (APF9328)==
 
==i.MXL (APF9328)==
−
Nothing special to do, 2 UARTS are activated by default
+
Nothing special to do, the 2 UARTS are activated by default.
  
 
==i.MX27 (APF27)==
 
==i.MX27 (APF27)==
−
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">
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             [ ]  UART6
 
             [ ]  UART6
 
</pre>
 
</pre>
−
Some UARTs won't be available or preselected depending on the other devices configured or the baseboard used. (For example UART4 is not available on APF27Dev; indeed pins are used for USB1).
+
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).
 +
<pre class="host">
 +
$ make
 +
</pre>
 +
* Reflash your Linux kernel
  
 
==Going further==
 
==Going further==

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

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