Difference between revisions of "Activate i.MX internal UARTs"
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* 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 | + | $ 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