Ultra96 Hardware Design - Recent Threads

Ultra96v2 XADC IP not loading on Vivado

Delron — Thu, 12 Mar 2026 09:25:09 GMT

Hello

I am handling a project based on Zynq + MPSoC on the Ultra96v2 and l want to use the PL with the PS .However l cannaot seem to add the XADC IP layer on Vivado to build the hardware implementation.Is there any possible work around to get the system working?Also any possible workflows on using Yocto development guides that could make things simpler for me?

Thank you for your assistance

Usb Ethernet gadget on Ultra96-v2 board not working properly on 2024.1 prebuild image

DominicT — Wed, 12 Nov 2025 09:25:45 GMT

Hello,

I am trying to get the USB ethernet gadget working on an Ultra96-v2 board from Avnet.

After not succeeding with my own image I tried to use the 2024.1 prebuild image provided by avnet.

The gadget is configured using the provided script which does the configuration via configfs.

This seems to work, the usb0 ethernet adapter is available and I can assign an IP etc.

But on the host PC (Ubuntu) the usb device is not enumerated a first. After approx. 30 minutes it suddenly enumerates, but only using USB2.1 and not 3.0 as configured.

I then used the debugfs interface of DWC3 driver to get more information. The link_state hangs at RX.Detect while the device is not enumerating.

Has anybody else encountered that problem as well? What could be the problem?

Any help is highly appreciated - I'm hanging on that issue for a couple of weeks already...

Best Regards,

Dominic

RE: Usb Ethernet gadget on Ultra96-v2 board not working properly on 2024.1 prebuild image

olivia_49 — Thu, 19 Feb 2026 09:15:53 GMT

This doesn’t appear to be a configfs issue. If DWC3 is sitting in RX.Detect Then it suddenly appears as USB2 after a long delay, which usually indicates that USB 3.0 link training is failing; most of the time, it’s due to PHY configuration, cable quality, or signal integrity. I’d start by checking the device tree PHY settings and swapping in a known good USB 3.0 cable and port. https://github.com/torvalds/linux Related USB hardware project on PCBWay, it will be very helpful. https://pcbway.com/project/shareproject/I_made_a_Nano_USB_HUB_daafa782.html

RE: Usb Ethernet gadget on Ultra96-v2 board not working properly on 2024.1 prebuild image

lightcollector — Mon, 15 Dec 2025 03:41:13 GMT

Hi, You could take a look at PYNQ for the Ultra96 the SD card image and the source are configured to enable and use USB gadget. But PYNQ is not 2024.1 it uses 2022.1, they are probably still close enough though that it could help. https://github.com/Avnet/Ultra96-PYNQ

RE: JTAG/UART Serial Output Not Working on Avnet Ultra96-V2-G Rev 2.1

CMTI — Wed, 26 Nov 2025 08:13:06 GMT

sure will try the same.

Thank you

JTAG/UART Serial Output Not Working on Avnet Ultra96-V2-G Rev 2.1

CMTI — Tue, 25 Nov 2025 05:27:12 GMT

I’m using an Avnet Ultra96-V2-G Rev 2.1 board together with the Avnet JTAG/UART Pod.
JTAG debugging works correctly, but the UART serial communication through the same pod is not working — I am not seeing any UART output at all.

I expected the UART channel on the pod to provide the serial console, but there is no data coming through. I’ve confirmed that the target application is running, but no serial output appears.

Has anyone successfully used the JTAG/UART Pod for UART communication on the Ultra96-V2?
Or can someone confirm whether the Ultra96-V2 actually routes UART signals to this pod connector?

Any guidance or clarification would be appreciated.

RE: JTAG/UART Serial Output Not Working on Avnet Ultra96-V2-G Rev 2.1

iksevas — Tue, 25 Nov 2025 06:24:25 GMT

From the user guide, do you have the FTDI driver loaded?

RE: Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

lightcollector — Sat, 22 Nov 2025 08:24:40 GMT

Hi, I don't know if it would suit your needs but it would likely be a lot less work to purchase an Ethernet to wifi device? They are relatively inexpensive and can be found for purchase at many places. It would also possibly provide a better wifi signal and IP throughput and be further away from the U96 so if you use USB 3.x it won't interere as badly. If the U96 Ethernet is setup to accept an IP address from a DHCP server there would be no modifications to the U96 firmware or dongle drivers to mess with; just plug and play.

Kind regards

Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

cristian2099 — Fri, 24 Oct 2025 19:15:37 GMT

Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

RE: Usb Ethernet gadget on Ultra96-v2 board not working properly on 2024.1 prebuild image

Tutasalina — Fri, 14 Nov 2025 18:32:07 GMT

The RX.Detect hang on DWC3 usually indicates the host isn’t seeing proper SuperSpeed pairs, so the link never exits detection. Ultra96-V2 is known to fall back to USB2 when signal quality or cable integrity isn’t ideal. Test with another USB-C cable or port, and try forcing USB2 temporarily to confirm the physical layer is the root cause.

RE: Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

cristian2099 — Fri, 24 Oct 2025 20:51:16 GMT

yes I tried but i don't have drivers on my OS, i dont understand why if i downloaded the one from the getting started ultra96v2. The other option of the OSC i will try but in the meantime i want to use the boards

RE: Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

cristian2099 — Fri, 24 Oct 2025 20:49:53 GMT

Hello in the drivers/net there is only vxlan.ko and xen-netback.ko, so I see that there are not net drivers in my OS. I wonder why if i just downloaded the one in the getting started of ultra96v2

RE: Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

iksevas — Fri, 24 Oct 2025 20:33:33 GMT

I see. Thanks for the clarification. I would also agree with @shabaz then regarding finding something that you could plug in that contains a simple know good driver in the OS your are targeting. Another option if you have access would be to potentially get the OSC swapped out to get your board functional.

RE: Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

cristian2099 — Fri, 24 Oct 2025 20:25:17 GMT

Thanks! I will try

RE: Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

cristian2099 — Fri, 24 Oct 2025 20:23:57 GMT

Hello, my board is affected by the issue described in https://www.avnet.com/wcm/connect/314f69d3-c745-44ed-a3ce-cd0c40b6088e/Errata+24001+U96+WiFi.pdf?MOD=AJPERES&ContentCache=NONE&CACHE=NONE&CACHEID=ROOTWORKSPACE-314f69d3-c745-44ed-a3ce-cd0c40b6088e-o-xcAr2. Avnet support confirmed this a few days ago. Anyway, I require Wi-Fi functionality to use my boards, so I’m looking for possible solutions.

RE: Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

iksevas — Fri, 24 Oct 2025 19:49:06 GMT

How did you verify that your WIFI on-board the U96V2 didn't work? This article may help you: Tips for Integrating WiFi on the Ultra96-V2 - element14 Community

RE: Hello, i want to use my board ultra96v2 with a wifi dongle to have internet, since my board wifi module does not work. Is there a suggested one? do I need a driver? thanks in advance.

shabaz — Fri, 24 Oct 2025 19:29:45 GMT

This is more of a general Linux thing. Check what drivers are installed, and purchase a WiFi adapter that is compatible with that, to improve your chances of success. Otherwise, expect a more uphill struggle. Try something like the following (if it doesn't work, you may need to Google around to find out how to determine which drivers are installed).

find /lib/modules/$(uname -r)/kernel/drivers/net/wireless/

RE: Petalinux 2024.1 Build Error for Ultra96-V2 with WILC Driver on Kernel 6.8.0

EnasAbulibdeh — Thu, 28 Aug 2025 14:49:08 GMT

I am experiencing a similar issue with the WILC3000 driver. The Ultra96-V2 board includes a WILC3000 module, and I am encountering a conflict between the WILC3000 firmware and the driver provided by PetaLinux 2025.2. I need to install the WILC3000 driver files and create a custom module in my PetaLinux project. Unfortunately, I am unable to generate the corresponding .ko files. Any suggestions or guidance would be greatly appreciated.

Petalinux 2024.1 Build Error for Ultra96-V2 with WILC Driver on Kernel 6.8.0

agingwarrior — Mon, 28 Oct 2024 11:15:26 GMT

Hello,
I'm working on a Petalinux project with the Ultra96-V2 board on kernel version 6.8.0 (Ubuntu 22.04 LTS), using Petalinux 2024.1. I've set up my project using the steps listed below:

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:86c7e446-c8b8-494a-99e7-15758aa57736:type=batchfile&text=cd%20~%0Amkdir%20Avnet_2024_1%0Acd%20~%2FAvnet_2024_1%0Agit%20clone%20https%3A%2F%2Fgithub.com%2FAvnet%2Fbdf%0Agit%20clone%20-b%202024.1%20https%3A%2F%2Fgithub.com%2FAvnet%2Fhdl%0Agit%20clone%20-b%202024.1%20https%3A%2F%2Fgithub.com%2FAvnet%2Fpetalinux%0A]

Then I initiate the build with:

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:eb36d6db-93f4-452f-baf0-72c51b29ea3f:type=text&text=cd%20~%2FAvnet_2024_1%2Fpetalinux%0Ascripts%2Fmake_u96v2_sbc_base.sh%0A]

I encountered build errors with the WILC driver in `bt.c` and `power.c` files. The errors seem to be related to deprecated functions that are incompatible with the latest kernel. Specifically, the following issues arise:

1. Error with `class_create`:
   - Error: `too few arguments to function 'class_create'`
   - It seems the function signature has changed in newer kernels, requiring an explicit owner argument.

2. Error with `of_get_named_gpio_flags`:
   - Error: `implicit declaration of function ‘of_get_named_gpio_flags’`
   - This function appears to be deprecated in favor of `gpiod` (GPIO descriptor) APIs.

I tried manually updating the code to address these compatibility issues, such as replacing `of_get_named_gpio_flags` with `gpiod_get`. However, I’m still unsure if I’m implementing this correctly, and I'm looking for guidance on how best to adapt the WILC driver for compatibility with the 6.8.0 kernel.

Has anyone faced a similar issue with the WILC driver on Ultra96-V2 or with recent kernel updates? Any advice or solutions would be greatly appreciated! I am able to complete the build if the wilc driver is removed from the petalinux build list.

Thanks in advance for your help!

RE: ZUBoard 1CG PCB is overheating near the power lines

tjaekel — Thu, 21 Aug 2025 03:01:44 GMT

Yes, my one gets hot as well, where all the power regulators are: 62C with a contactless temp. sensor.

So, I think: even it is annoying to get a board so hot (that I could burn my fingers), it is still in the range of specs. (but what is the live time of involved regulator chips?)

It is obvious: power chips want to see 15V from USB-C and then bring it down to 3V3, 1V8, 1V2. With 2A total current, it results in 23W to burn. Even most of the regulators are SMPS, it is a bit annoying to see the board getting so hot, especially mainly just on Power Supply (FPGA with passive heat sink is even cooler).

I think, it is 'intended' this way, works fine for me to let the board run for days, just 'don't touch' the board.

ZUBoard 1CG PCB is overheating near the power lines

Ravi_V — Wed, 16 Jul 2025 07:06:30 GMT

I have observed overheating (60 degrees) on the ZUBoard 1CG PCB around the power lines area. Has your team noticed this earlier?

v3.0.1 Ultra96 PYNQ sensors96b_v2.bsp

paracpg — Mon, 18 Aug 2025 09:39:05 GMT

Hi,

I am using Vivado / Vitis 2024.2 with PYNQ v3.0.1 and am planning to move to PYNQ v3.1.

I notice that https://github.com/Avnet/Ultra96-PYNQ/releases/tag/v3.0.1 does not have a release for the sensors96b_v2.bsp so I am planning to build the bsp.

At the moment my PYNQ v3.0.1 environment seems to work well and I am using the v3.0.0 sensors96b_v2.bsp but obviously at some point I will have to create the new bsp.

I see in https://github.com/Avnet/hdl/tree/2024.2/boards/u96v2_sbc/base that you publish a base for the xczu3eg-sbva484-1-i part. Is this the script I need for my hardware_project or is there another repository somewhere with the definition of the board support for sensors96b_v2?

I am thinking that as the Ultra96 is EOL I will have to get more creative in order to use this marvellous bit of hardware! I just snapped up one of the remaining boards to start work with a larger FPGA having spent many years with the zynq 7010 / 7020.

Peter

RE: v3.0.1 Ultra96 PYNQ sensors96b_v2.bsp

paracpg — Tue, 19 Aug 2025 16:43:33 GMT

Ah silly me.. actually all I have to do is unzip the 2022 board support package and I have everything I need to rebuild with the latest. .. Question answered!

Ultra96-V2 Boot Freeze at usbhid with Prebuilt Tria Vitis Image (2023.2)

Sv2112 — Wed, 16 Jul 2025 06:55:23 GMT

I'm using the prebuilt .img.gz from the Tria Vitis Platforms 2023.2 GitHub for Ultra96-V2. After flashing to SD and setting boot switches (SW3: 1=OFF, 2=ON), the board freezes at:

usbcore: registered new interface driver usbhid

usbhid: USB HID core driver

No USB devices are connected except micro usb to PC via the Avnet JTAG/UART pod. Is this a known issue? Could it be image corruption? There's no MD5 checksum provided — any help appreciated.

RE: Ultra96-V2 Boot Freeze at usbhid with Prebuilt Tria Vitis Image (2023.2)

iksevas — Tue, 22 Jul 2025 18:05:08 GMT

I assume you are using the BSPs from the Sharepoint site? Those are pre-built and have checksums:

Ultra96V2 has support through 2024.1.

https://avnet.me/ZedSupport?ICID=microzed-datasheet-widget

This link can be found on the Avnet boards page for the product you are working on under the REFERENCE DESIGNS tab. It will point you to the SharePoint site there.