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

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 	soelim(1) from gnu/usr.bin/groff has been replaced by usr.bin/soelim.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

sys/arm/conf/BEAGLEBONE

@@ -133,5 +133,8 @@ device		axe			# ASIX Electronics USB Ethernet
 device		usb_template    	# Control of the gadget
 device		usfs
 
+# Pinmux
+device		fdt_pinctrl
+
 # Flattened Device Tree
 options 	FDT			# Configure using FDT/DTB data

sys/arm/conf/PANDABOARD

@@ -57,6 +57,7 @@ options 	DDB			# Enable the kernel debugger
 #options 	BOOTP_NFSV3
 #options 	BOOTP_WIRED_TO=ue0
 
+device		fdt_pinctrl
 # Interrupt controller
 device		gic
 
@@ -81,6 +82,7 @@ device		pl310			# PL310 L2 cache controller
 
 # GPIO
 device		gpio
+device		gpioled
 
 # The following enables MFS as root, this seems similar to an initramfs or initrd
 # as used in Linux.

sys/arm/ti/aintc.c

@@ -69,14 +69,19 @@ static struct resource_spec ti_aintc_spec[] = {
 	{ -1, 0 }
 };
 
-
 static struct ti_aintc_softc *ti_aintc_sc = NULL;
 
 #define	aintc_read_4(_sc, reg)		\
     bus_space_read_4((_sc)->aintc_bst, (_sc)->aintc_bsh, (reg))
 #define	aintc_write_4(_sc, reg, val)		\
     bus_space_write_4((_sc)->aintc_bst, (_sc)->aintc_bsh, (reg), (val))
 
+/* List of compatible strings for FDT tree */
+static struct ofw_compat_data compat_data[] = {
+	{"ti,am33xx-intc",	1},
+	{"ti,omap2-intc",	1},
+	{NULL,		 	0},
+};
 
 static void
 aintc_post_filter(void *arg)
@@ -92,9 +97,9 @@ ti_aintc_probe(device_t dev)
 	if (!ofw_bus_status_okay(dev))
 		return (ENXIO);
 
-
-	if (!ofw_bus_is_compatible(dev, "ti,aintc"))
+	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
 		return (ENXIO);
+
 	device_set_desc(dev, "TI AINTC Interrupt Controller");
 	return (BUS_PROBE_DEFAULT);
 }