Timing violation in ls_clk[0] clock domain of HDMI RX core IP

Description

HDMI RX core IP may encounter timing violation if ls_clk[2:0] is clocked from 3 separate clock source instead of single clock source. This is due to improper handling of clock domain crossing of individual TMDS data path to ls_clk[0] clock domain in HDMI RX core IP. 

Resolution

Drive all the 3 ls_clk[2:0] from the same clock source and performing data synchronization to that single clock source prior to connecting to HDMI RX core IP.

User may also refer to Arria® 10 HDMI design example mr_hdmi_rx_core_top.v design file for the demonstration of the connection. Example design can be generated from HDMI core IP.

This issue is fixed in Quartus® Prime version 17.0 update 1.