TIG_SRAI clock constraints in pnr_user.xdc

Question

Hey guys,   
  
I was wondering about the provenance of these three constraints that appear in some but not all of the example designs. Under what circumstances are they required? In my designs, now based off cl_dram_dma, (which has them commented out)), only the latter two correctly resolve.  
  
set_clock_groups -name TIG_SRAI_1 -asynchronous -group $$get_clocks -of_objects \[get_pins static_sh/SH_DEBUG_BRIDGE/inst/bsip/inst/USE_SOFTBSCAN.U_TAP_TCKBUFG/O$$\] -group $$get_clocks -of_objects \[get_pins SH/kernel_clks_i/clkwiz_sys_clk/inst/CLK_CORE_DRP_I/clk_inst/mmcme3_adv_inst/CLKOUT0$$\]  
set_clock_groups -name TIG_SRAI_2 -asynchronous -group $$get_clocks -of_objects \[get_pins static_sh/SH_DEBUG_BRIDGE/inst/bsip/inst/USE_SOFTBSCAN.U_TAP_TCKBUFG/O$$\] -group $$get_clocks drck$$                                                                                                 
set_clock_groups -name TIG_SRAI_3 -asynchronous -group $$get_clocks -of_objects \[get_pins static_sh/SH_DEBUG_BRIDGE/inst/bsip/inst/USE_SOFTBSCAN.U_TAP_TCKBUFG/O$$\] -group $$get_clocks -of_objects \[get_pins static_sh/pcie_inst/inst/gt_top_i/diablo_gt.diablo_gt_phy_wrapper/phy_clk_i/bufg_gt_userclk/O$$\]  
  
Can i safely remove all three?

Answer

Hey Chakra, any word on this?

Answer

Hello,  
  
Yes, we verified that it is safe to remove these three constraints from cl_pnr_user.xdc.  
  
We will soon update the github page reflecting this change for all the CLs. In the mean time please remove these constraints for your CL builds.   
  
Thanks!  
Chakra.

Answer

Hello,  
  
Thanks for bringing this to our attention. We will look into this issue and confirm the correct action.   
  
-Chakra

TIG_SRAI clock constraints in pnr_user.xdc

관련 콘텐츠