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thejashree_13
Adventurer
Adventurer
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Registered: ‎07-29-2019

Intra-clock violation for clkoutphy_out signal in MIPI CSI-2 RX Subsystem IP v4.1 in Vivado 2019.2

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Hi,

We are getting intra-clock violation for clkoutphy_out signal in MIPI CSI-2 RX Subsystem . We have already posted in forum regarding this

Please find the below link for the thread.

https://forums.xilinx.com/t5/Video-and-Audio/Intra-clock-violation-for-clockoutphy-out-in-MIPI-CSI-2-RX/m-p/1150930#M34408.

In the thread, the moderator has suggested to use Vivado 2020.1 version due to speed grade constraints of the device which we are using.

We just wanted to know , since we are not using that signal anywhere as it shown in the block diagram(See the link for the block diagram

)whether it is safe to ignore or does it affect any functionality of the MIPI IP?. We just wanted to know whether this clock is used internally for any purpose

With regards,

Thejashree

 

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bpatil
Xilinx Employee
Xilinx Employee
321 Views
Registered: ‎03-07-2018

Hi @thejashree_13 

This issue not related to MIPI CSI-2 RX SS IP or its signals. Its’ limitation of Vivado tool; there are no speed files available for xczu7cg-fbvb900-1-e device to support MIPI at 2500Mb/s lane rate. So, you need to use Vivado tools 2019.2.2 or later for XC devices.

Please check  ds925-zynq-ultrascale-plus:  Table 72: MIPI D-PHY Performance for more details. 

EDIT: According to https://www.xilinx.com/support/answers/73633.html, I believe you can use Vivado 2019.2 without any issues.

Regards,
Bhushan

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bpatil
Xilinx Employee
Xilinx Employee
322 Views
Registered: ‎03-07-2018

Hi @thejashree_13 

This issue not related to MIPI CSI-2 RX SS IP or its signals. Its’ limitation of Vivado tool; there are no speed files available for xczu7cg-fbvb900-1-e device to support MIPI at 2500Mb/s lane rate. So, you need to use Vivado tools 2019.2.2 or later for XC devices.

Please check  ds925-zynq-ultrascale-plus:  Table 72: MIPI D-PHY Performance for more details. 

EDIT: According to https://www.xilinx.com/support/answers/73633.html, I believe you can use Vivado 2019.2 without any issues.

Regards,
Bhushan

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thejashree_13
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Registered: ‎07-29-2019

Hi @bpatil ,

Thank you so much for the quick response.

Where do I find 2019.2.2 version?

I am not able to find the this version for installation.

With regards,

Thejashree

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bpatil
Xilinx Employee
Xilinx Employee
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Registered: ‎03-07-2018

Hi @thejashree_13 

Regarding difference between PetaLinux versions, the answer is No. 2019.2.2 version won’t be available as a public release, you need to use the 2019.2 or latest 2020.1 public release versions. I believe this is applicable for Vivado version as well; that's the reason @karnanl suggested you use Vivado 2020.1 in https://forums.xilinx.com/t5/Video-and-Audio/Intra-clock-violation-for-clockoutphy-out-in-MIPI-CSI-2-RX/m-p/1150930#M34408 

Regards,
Bhushan

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thejashree_13
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Registered: ‎07-29-2019

Hi @bpatil ,

Thank you so much for the clarification and will update the vivado version

With regards,

Thejashree

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