Multiple UARTs on Beaglebone Black

[Steve B]

On Fri, Jun 5, 2015 at 11:53 AM, Joel Sherrill <joel.sherrill at oarcorp.com>
wrote:

>
>
> On June 5, 2015 1:50:41 PM CDT, Steve B <sbattazzo at gmail.com> wrote:
> >Hi guys,
> >
> >I would like to use more than one UART on the Beaglebone Black.
> >
> >I see that the Console_Configuration_Ports in console-config.c only has
> >one entry but some of the header files do have base addresses and other
> >things for a couple more UARTs.
> >
> >Can I simply add a second entry to that table named "/dev/ttyS1" and
> >open "/dev/ttyS1" and count on ns16550.c to take care of things, or
> >will I need to also modify the other functions in console-config.c to
> >account for other possible entries in the table?
>
> You should review the existing methods to see that there are correct for
> the other serial ports. I expect that they will be ok but the base address
> and interrupt vectors may need to change. also check the probe method to
> make sure it is correct for the porch you're adding.
>
> >Or do those functions only matter if I want to have the options to use
> >the other UARTs as stdout?
> >
>
> No. Those table entries mate the generic drive with bsp specific glue code
> and settings.
>
> >
> >Thanks,
> >
> >Steve
>
> --joel
>

Thanks for the quick response! Looks like there's a little bit of tweaking
to do.

Steve
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