Activate i.MX internal UARTs: Difference between revisions
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==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 linux26-menuconfig | ||
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[ ] UART6 | [ ] UART6 | ||
</pre> | </pre> | ||
Some UARTs won't be available | 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== | ||
Revision as of 13:17, 25 August 2010
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 linux26-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
