Comments on: Automatic generation of DTS file for Zedboard/ZC702 (Zynq-7000)

By: eli

eli — Wed, 18 Jun 2014 10:16:37 +0000

Hi,

As mentioned above, I’m not in sync with this tool for quite a while. Sorry.

By: Markus

Markus — Wed, 18 Jun 2014 09:36:11 +0000

Hi,
When I want to generate the dts file, i get the following Error in the console:

Staging source files.
Running DRCs.
#————————————–
# device-tree BSP DRC…
#————————————–
Running generate.
#————————————–
# device-tree BSP generate…
#————————————–
ERROR:EDK:2950 –
Unknown MDT DataBase Function get_property
ERROR:EDK – device-tree () –
ERROR:EDK:3416 – Error(s) while running TCL procedure generate().

Can you help me with this?
Cheers Markus

By: eli

eli — Wed, 23 Apr 2014 02:30:45 +0000

Hi,

Frankly speaking, I haven’t been following up with what Xilinx offers in the field of automatic tools for obtaining a device tree. Whenever necessary, I write the entries manually.

By: raph

raph — Tue, 22 Apr 2014 21:12:24 +0000

please how do you generate dts file in vivado 2014.1 ?
there is no more xps, so no libgen

previous method create an empty directory an Makefile…

By: Greg

Greg — Wed, 12 Feb 2014 23:24:01 +0000

Hi Matthias and Eli,
I had the same issue on a zc706 board. When I ran with the existing devicetree, the boot would start ok and then switch away from the serial port. When I followed Matthias suggestion, it booted up ok.
I think what is happening is the kernel (I’m using a petalinux kernel) switches to serial0 for console near the end of the boot process by default. This is normally ok, but on the zc706 (and ZED I assume), uart0 exists, but doesn’t go anywhere. The change above makes the kernel use &ps7_uart_1 (which goes to the CP2103) as the first serial port, or console. I’m sure you can change this in the kernel configuration as well as here, but this way makes the most sense.

BTW. Eli, thanks for this blog. It is really helpful. I don’t fully understand the devicetree yet, but at least I can get things working now.

cheers,
Greg

By: Matthias

Matthias — Fri, 23 Aug 2013 11:47:56 +0000

The strange thing is, the alias is not used in my DTS ??
(That seems to be some homework for me)

By: eli

eli — Thu, 22 Aug 2013 10:23:47 +0000

Well, the question is what DTS file you’re using, with which kernel etc. I don’t have any alias on either serial0 or serial1 in my DTS (Xillinux).

If that really interests you, look where this alias is used. And then possibly grep the zynq and ARM related sources for the string.

By: Matthias

Matthias — Thu, 22 Aug 2013 06:35:10 +0000

Hello Eli,
thanks for your blog, is very helpful.
I have noticed a (at least for me) strange behaviour with the generated device tree. On my ZED board it is only booting when I change the alias line
“serial1 = &ps7_uart_1;”
to
“serial0 = &ps7_uart_1;”

Does that make any sense to you?
best regards,
Matthias