libor Posted October 30, 2018 Share Posted October 30, 2018 Hello. I have been facing the following issue. I am using Vivado v2018.2.2 I installed the board files for Cora z7 board I have created a new project and added a design to it. I added ZYNQ7 processing system to the design. There was a green bar with "Designer Assistance available. Run Block Automation.", that I used. I tried to validate the design. with the following error: "[BD 41-758] The following clock pins are not connected to a valid clock source: /processing_system7_0/M_AXI_GP0_ACLK" Can you be please of any help? Thank you very much. Libor Link to comment Share on other sites More sharing options...
jpeyron Posted October 30, 2018 Share Posted October 30, 2018 Hi @libor, If you only have the Zynq processor in your block design you will need to connect the FCLK_CLK0 to the M_AXI_GP0_ACLK as I have done in the attached screen shot. Please attach a screen shot of your block design if this does not fix the issue. cheers, Jon Link to comment Share on other sites More sharing options...
libor Posted October 31, 2018 Author Share Posted October 31, 2018 HI @jpeyron. Thank you so much, Jon. Yes, it worked, I am just surprised that the error message did not disappear (I probably tried that but still seen the error message.). May I please ask you also about the warning messages? Should I be worried? Or when should I be worried? [PSU-1] Parameter : PCW_UIPARAM_DDR_DQS_TO_CLK_DELAY_2 has negative value -0.009 . PS DDR interfaces might fail when entering negative DQS skew values. [PSU-2] Parameter : PCW_UIPARAM_DDR_DQS_TO_CLK_DELAY_3 has negative value -0.033 . PS DDR interfaces might fail when entering negative DQS skew values. Best, Libor Link to comment Share on other sites More sharing options...
jpeyron Posted October 31, 2018 Share Posted October 31, 2018 Hi @libor, Here is Hardware errata section of the reference manual for the zybo-Z7 that explains these errors. I will talk to our content team about adding this section to the other Zynq Dev Boards reference manuals. You can ignore these warnings. cheers, Jon Link to comment Share on other sites More sharing options...
libor Posted October 31, 2018 Author Share Posted October 31, 2018 Thank you again @jpeyron . Cheers, Libor Link to comment Share on other sites More sharing options...
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libor
Hello.
I have been facing the following issue. I am using Vivado v2018.2.2
Can you be please of any help?
Thank you very much.
Libor
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