element14 Community
element14 Community
    Register Log In
  • Site
  • Search
  • Log In Register
  • Community Hub
    Community Hub
    • What's New on element14
    • Feedback and Support
    • Benefits of Membership
    • Personal Blogs
    • Members Area
    • Achievement Levels
  • Learn
    Learn
    • Ask an Expert
    • eBooks
    • element14 presents
    • Learning Center
    • Tech Spotlight
    • STEM Academy
    • Webinars, Training and Events
    • Learning Groups
  • Technologies
    Technologies
    • 3D Printing
    • FPGA
    • Industrial Automation
    • Internet of Things
    • Power & Energy
    • Sensors
    • Technology Groups
  • Challenges & Projects
    Challenges & Projects
    • Design Challenges
    • element14 presents Projects
    • Project14
    • Arduino Projects
    • Raspberry Pi Projects
    • Project Groups
  • Products
    Products
    • Arduino
    • Avnet & Tria Boards Community
    • Dev Tools
    • Manufacturers
    • Multicomp Pro
    • Product Groups
    • Raspberry Pi
    • RoadTests & Reviews
  • About Us
  • Store
    Store
    • Visit Your Store
    • Choose another store...
      • Europe
      •  Austria (German)
      •  Belgium (Dutch, French)
      •  Bulgaria (Bulgarian)
      •  Czech Republic (Czech)
      •  Denmark (Danish)
      •  Estonia (Estonian)
      •  Finland (Finnish)
      •  France (French)
      •  Germany (German)
      •  Hungary (Hungarian)
      •  Ireland
      •  Israel
      •  Italy (Italian)
      •  Latvia (Latvian)
      •  
      •  Lithuania (Lithuanian)
      •  Netherlands (Dutch)
      •  Norway (Norwegian)
      •  Poland (Polish)
      •  Portugal (Portuguese)
      •  Romania (Romanian)
      •  Russia (Russian)
      •  Slovakia (Slovak)
      •  Slovenia (Slovenian)
      •  Spain (Spanish)
      •  Sweden (Swedish)
      •  Switzerland(German, French)
      •  Turkey (Turkish)
      •  United Kingdom
      • Asia Pacific
      •  Australia
      •  China
      •  Hong Kong
      •  India
      •  Korea (Korean)
      •  Malaysia
      •  New Zealand
      •  Philippines
      •  Singapore
      •  Taiwan
      •  Thailand (Thai)
      • Americas
      •  Brazil (Portuguese)
      •  Canada
      •  Mexico (Spanish)
      •  United States
      Can't find the country/region you're looking for? Visit our export site or find a local distributor.
  • Translate
  • Profile
  • Settings
Avnet Boards Forums
  • Products
  • Dev Tools
  • Avnet & Tria Boards Community
  • Avnet Boards Forums
  • More
  • Cancel
Avnet Boards Forums
Ultra96 Hardware Design Ultra96-V2 Vivado 2019.2 IOPLL error wrong divider
  • Forum
  • Documents
  • Members
  • Mentions
  • Sub-Groups
  • Tags
  • More
  • Cancel
  • New
Join Avnet Boards Forums to participate - click to join for free!
Actions
  • Share
  • More
  • Cancel
Forum Thread Details
  • State Verified Answer
  • Replies 7 replies
  • Subscribers 346 subscribers
  • Views 1407 views
  • Users 0 members are here
  • ultra96
Related

Ultra96-V2 Vivado 2019.2 IOPLL error wrong divider

ppryga
ppryga over 5 years ago

Hi there,

 

I'm new to Xilinx and Ultra96-v2 boards.

I've been trying to create hardware descripion in Vivado and went to error situation.

There is wrong IOPLL divider set.

When I change it to 91 (including enable of divider 2) then I have following error:

[BD 41-1273] Error running post_config_ip TCL procedure: unexpected "," outside function argument list

    ::xilinx.com_ip_zynq_ultra_ps_e_3.3::post_config_ip Line 47"

 

Besides that I see a number of: "[IP_Flow 19-2373] Cannot identify default part." errors.

 

Can you help me with those?

 

BR,

Piotr

  • Sign in to reply
  • Cancel
  • narrucmot
    0 narrucmot over 5 years ago

    Why do you need to change the IOPLL divider?

     

    You may want to examine the known-good clocking settings in the board definition (BDF) for the Ultra96-V2 board:

    https://github.com/Avnet/bdf/blob/master/ultra96v2/1.0/preset.xml

     

    <user_parameter name="CONFIG.PSU__CRL_APB__IOPLL_CTRL__DIV2" value="0"/>
    <user_parameter name="CONFIG.PSU__CRL_APB__IOPLL_CTRL__FBDIV" value="45"/>
    <user_parameter name="CONFIG.PSU__CRL_APB__IOPLL_CTRL__FRACDATA" value="0"/>
    <user_parameter name="CONFIG.PSU__CRL_APB__IOPLL_CTRL__SRCSEL" value="PSS_REF_CLK"/>
    <user_parameter name="CONFIG.PSU__CRL_APB__IOPLL_FRAC_CFG__ENABLED" value="0"/>
    <user_parameter name="CONFIG.PSU__CRL_APB__IOPLL_TO_FPD_CTRL__DIVISOR0" value="3"/>

     

    --Tom

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • ppryga
    0 ppryga over 5 years ago in reply to narrucmot

    Hello,

     

    I didn't want to change the IOPLL. Vivado 2019.2 complains that clock (with default settgins) are out of range.

    It shows that IOPLL after multiplication is 1485MHz and it should be 1500MHz.

     

    It looks like there is a problem within Vivado... but can't figure out what is it. Messages provided by Vivado are not helpful.

    The same goes for "default part"... what part is it related with...? Can't guess...

     

    It gets a bit frustrating if you are not able to fix something because you don't know what to fix.

     

    BR,

    Piotr

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • narrucmot
    0 narrucmot over 5 years ago in reply to ppryga

    I forgot to mention in my previous reply that the blog post "Avnet HDL git HOWTO (Vivado 2020.1 and earlier)" may be helpful if you want to target the Ultra96-V2 board in Vivado and use the known-good PS configuration, clocking, etc. settings specified in the BDF file.  You can use this to compare to your custom Vivado project.

     

    --Tom

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • bhfletcher
    0 bhfletcher over 5 years ago

    I recently became aware of an issue that might be affecting you. Are you using native or VM Linux? If so, which version?

     

    See this post by Javier Garcia: https://ohwr.org/project/soc-course/wikis/Custom-Board-Definition-Files . Note this key message:

     

    The only presets that apply to the Ultra96-V2 are those in the zynq_ultra_ps_e_preset entry, but there is a critical problem with them as it produces different outcomes depending on your Linux distribution, e.g.:

     

    If you use Vivado in Ubuntu 16.04.6, the design works.

    If you use Vivado in Ubuntu 18.04.4, the design doesn't work.

     

    I personally have been using Ubuntu 16.04, which may explain why I haven't seen your specific problem. I don't see that Javi published what the specific error is when 18.04.4 doesn't work, but it is related to the LPDDR4 so definitely worth a try.

     

    We will be investigating further and updating the Avnet BDF to correct these issues.

     

    Many thanks to Javi and GL Research for publishing this research!

    Bryan

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • ppryga
    0 ppryga over 5 years ago in reply to narrucmot

    Thank you!  I'll take a look on it.

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • ppryga
    0 ppryga over 5 years ago in reply to bhfletcher

    Hi Bryan!

     

    I'm Arch Linux user and it is native installation.

     

    Thanks for link to course on BDF, I appreciate it a lot.

     

    Hm... referring to different outcome of the Vivado depending on the distribution or its version, shouldn't it be an issue?

    I've downloaded recent version of Vivado and exactly the same project work well there, I mean it finished synthesis and produced output that can be used in further development.

    I didn't change anything just used simples tutorial from AVNET for generating hardware layer for the board.

    There were no complains about IOPLL and "Cannot identify default part." error either.

     

    As I have already written, error messages are fuzzy and didn't provide much information about real cause of the problems...

     

    Thanks for your support guys!

    It is good to be here and have one to ask if problem occurs.

     

    BR,

    Piotr

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Verify Answer
    • Cancel
  • bhfletcher
    0 bhfletcher over 5 years ago in reply to ppryga

    Piotr,

     

    Regarding the various distribution versions, it shouldn't matter which one you use as long as it is supported by Xilinx. I think the Xilinx Support may be the key to understanding some of this. You can see the Supported OS in the Release Notes.

    https://www.xilinx.com/support/documentation/sw_manuals/xilinx2019_2/ug973-vivado-release-notes-install-license.pdf

    https://www.xilinx.com/support/documentation/sw_manuals/xilinx2019_2/ug1144-petalinux-tools-reference-guide.pdf

     

    As you can see, Ubuntu 18.04.4 wasn't officially supported in 2019.2, which may explain why the BDF usage is different. I think there are still some issues identified with the BDF, so we will still address them.

     

    Regarding Arch Linux, I do not see that on the official list for either 2019.2 or 2020.1, so you will want to exercise some caution there. Here is the 2020.1 list:

    https://www.xilinx.com/support/documentation/sw_manuals/xilinx2020_1/ug973-vivado-release-notes-install-license.pdf

     

    image

     

    Bryan

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Reject Answer
    • Cancel
element14 Community

element14 is the first online community specifically for engineers. Connect with your peers and get expert answers to your questions.

  • Members
  • Learn
  • Technologies
  • Challenges & Projects
  • Products
  • Store
  • About Us
  • Feedback & Support
  • FAQs
  • Terms of Use
  • Privacy Policy
  • Legal and Copyright Notices
  • Sitemap
  • Cookies

An Avnet Company © 2025 Premier Farnell Limited. All Rights Reserved.

Premier Farnell Ltd, registered in England and Wales (no 00876412), registered office: Farnell House, Forge Lane, Leeds LS12 2NE.

ICP 备案号 10220084.

Follow element14

  • X
  • Facebook
  • linkedin
  • YouTube