Generate device tree Vivado/SDK/HSI 2015.2

Question

1) Clone git://github.com/Xilinx/device-tree-xlnx.git to device-tree-xlnx
2) Export Hardware from vivado 2015.2
3) Launch SDK 2015.2
4) Add cloned device-tree-xlnx folder to repositories in SDK 2015.2
5) From SDK, File->New->Board Suppor Package. Select device_tree from Board Support Package OS options. Click Finish
6) The following error is displayed in the SDK log:
****** hsi v2015.2 (64-bit)
 **** SW Build 1266856 on Fri Jun 26 16:35:25 MDT 2015
   ** Copyright 1986-2015 Xilinx, Inc. All Rights Reserved.
INFO: [Hsi 55-1698] elapsed time for repository loading 0 seconds
ERROR: [Common 17-161] Invalid option value '' specified for 'object'.
ERROR: [Hsi 55-1545] Problem running tcl command ::sw_device_tree::generate : ERROR: [Common 17-161] Invalid option value '' specified for 'object
   while executing
"get_property BASE_VALUE $ip_mem_handle"
   (procedure "get_baseaddr" line 4)
   invoked from within
"get_baseaddr ${ip} no_prefix"
   (procedure "gen_peripheral_nodes" line 5)
   invoked from within
"gen_peripheral_nodes $drv_handle "create_node_only""
   ("foreach" body line 3)
   invoked from within
"foreach drv_handle [get_drivers] {
       # generate the default properties
       gen_peripheral_nodes $drv_handle "create_node_only"
       gen_r..."
   (procedure "::sw_device_tree::generate" line 3)
   invoked from within
"::sw_device_tree::generate device_tree"
ERROR: [Hsi 55-1442] Error(s) while running TCL procedure generate()
ERROR: [Common 17-39] 'hsi::generate_target' failed due to earlier errors.
----------------------

Answer 1

Hi,
After lookming at my work in the morning, I am afraid the solution requires alot more work than I am willing to delve into. At the very list I can help you with a work around.
In the IP packager
1) Remove IIC interface or other broken interface.
2) Select all ports that used to be grouped in 1) above, right click and select "Create Interface Definition"
3) If the selected ports are part of an input interface (left side of IP) select Slave Mode, and set location to be where your ip is. NOTE! after clicking ok, at the next prompt to create the Interface select NO unless it is one of kind IE you dont need an inteface opposite of the one being created due to selection of pins.
4) Select each port and hopefully your IP follows some of Xilinx's naming conventions e.g one of my IIC ports is int_sda_i and rename it to sda_i. Basically all other data is entered for you, you just have to fix the names of all the ports. This is import for the Auto Infer ports function.
5) save the interface. Do not close it yet. I don't know how to open it again if you need to adjust anything.
6) Now go back to Ports and Interfaces on the Package IP tab and slect the ports you previously selected. Right click and select "Auto Infer Interface"
7) Now go to the User tree and select your Interface definition. It is named what you set it to be in 3) above. Click OK
8) Give your IP a name and set interface presence as desired. As a side note, the example "$my_num_var > 0" does not make it clear that the variable my_num_var is created in "Customization Parameters"
9) If applicable, select the port for the other interface eg output iface and repeat 6), 7), 8)
10) The bad new is that on the side that interfaces with Xilinx IP block e,g IIC_1 on a processing system block you have to wire it up manually but at least you can gropu that mess into a hierachy. The good news is that the other end can be made "external" on the BD so you don't have wires all over the place.