Switch TI platform support code from using FreeBSD's custom-baked DTS

files to vendor-provided ones. It should make easier to adopt platform
code to new revisions of hardware and to use DTS overlays for various
Beaglebone extensions (shields/capes).

Original dts filenames were not changed, they're now wrappers over dts
files provided by TI. So make sure you update .dtb files on your
devices as part of kernel update

GPIO addressing was changed: instead of one global /dev/gpioc0 there
are per-bank instances of /dev/gpiocX. Each bank has 32 pins so for
instance pin 121 on /dev/gpioc0 in old addressing scheme is now pin 25
on /dev/gpioc3

On Pandaboard serial console devices was changed from /dev/ttyu0 to
/dev/ttyu2 so you'll have to update /etc/ttys to get login prompt
on serial port in multiuser mode. Single user mode serial console
should work as-is

Differential Revision:	https://reviews.freebsd.org/D2146
Reviewed by:	rpaulo, ian, Michal Meloun, Svatopluk Kraus

1 files changed, 13 insertions, 0 deletions

diff --git a/UPDATING b/UPDATING
index 12b554c1d373a..d961aa35ca96b 100644
--- a/UPDATING
+++ b/UPDATING
@@ -31,6 +31,19 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
 	disable the most expensive debugging functionality run
 	"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20150521:
+	TI platform code switched to using vendor DTS files and this update
+	may break existing systems running on Beaglebone, Beaglebone Black,
+	and Pandaboard:
+
+	- dtb files should be regenerated/reinstalled. Filenames are the
+	  same but content is different now
+	- GPIO addressing was changed, now each GPIO bank (32 pins per bank)
+	  has its own /dev/gpiocX device, e.g. pin 121 on /dev/gpioc0 in old
+	  addressing scheme is now pin 25 on /dev/gpioc3.
+	- Pandaboard: /etc/ttys should be updated, serial console device is
+	  now /dev/ttyu2, not /dev/ttyu0
+
 20150501:
 	soelim(1) from gnu/usr.bin/groff has been replaced by usr.bin/soelim.
 	If you need the GNU extension from groff soelim(1), install groff