beagle-x15: add separate config for BeagleBoard X15

Signed-off-by: Denys Dmytriyenko <denys@ti.com>

conf/machine/beagle-x15.conf

@@ -0,0 +1,36 @@
+#@TYPE: Machine
+#@NAME: BeagleBoard X15
+#@DESCRIPTION: Machine configuration for the BeagleBoard X15
+
+require conf/machine/include/dra7xx.inc
+
+MACHINE_GUI_CLASS = "bigscreen"
+
+IMAGE_FSTYPES += "tar.xz"
+
+SERIAL_CONSOLE = "115200 ttyS2"
+
+KERNEL_DEVICETREE = "am57xx-beagle-x15.dtb am57xx-beagle-x15-revb1.dtb"
+
+UBOOT_MACHINE = "am57xx_evm_config"
+
+# UBI information.  Note that this is board and kernel specific.  Changes
+# in your kernel port may require changes in these variables.  For more
+# details about this board please see
+# http://processors.wiki.ti.com/index.php/UBIFS_Support
+
+# do ubiattach /dev/ubi_ctrl -m 7 -O 2048
+# From dmesg:
+# UBI: smallest flash I/O unit:    2048
+# UBI: logical eraseblock size:    126976 bytes
+# from ubiattach stdout:
+# UBI device number 0, total 1988 LEBs
+MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 8192"
+
+# do ubiattach /dev/ubi_ctrl -m 7 -O 2048
+# from dmesg:
+# UBI: smallest flash I/O unit:    2048
+# UBI: physical eraseblock size:   131072 bytes (128 KiB)
+# UBI: sub-page size:              512
+# UBI: VID header offset:          2048 (aligned 2048)
+UBINIZE_ARGS = "-m 2048 -p 128KiB -s 512 -O 2048"