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Subject: Re: Status of BeagleBone Black UARTs
From: Ian Lepore <ian@FreeBSD.org>
To: Winston Smith <smith.winston.101@gmail.com>
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Date: Wed, 30 Apr 2014 20:36:46 -0600
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On Wed, 2014-04-30 at 20:14 -0400, Winston Smith wrote:
> I found an email thread from last year discussing enabling the BBB's
> additional UARTs:
> 
> http://freebsd.1045724.n5.nabble.com/Beaglebone-Serial-Ports-Progress-td5787251.html
> 
> Has there been any update on this?  Do I still need to use Ian [Young]'s patch?
> 
> I do see in the bboneblk.dts that all 5 uarts are listed, however
> dmesg only mentions uart0 and I don't see any additional tty devices
> in /dev.
> 
> Thanks!
> 
> -W

The kernel is ready to go with the uarts, you just need to adjust the
fdt data.  Change the status="disabled" to status="okay" for whichever
ones you want to enable, and adjust the pad control settings so that
devices are connected to the right pins.

-- Ian