vivado 2019.1 :
1、MIPI RXsubsystem 手冊說MPSOC -2 支持2500Mb/s ，但是vivado IP GUI配置界面只能選1500Mb/s 以下的速率。
2、進行DRC 設計規則檢測時，提示MIPI RX IP內部有沒驅動的信號，但是追蹤到IP底層代碼是有賦值的。
NDRV-1#1 ErrorDriverless Nets Undriven nets found. Running opt_design will clean up the undriven nets from your design. Please ensure that opt_design has been run on your design and check the remainingnets for DONT_TOUCH properties. The undriven nets in your design are: Bus Net ZCU104_NDI_HDMI_inst/hps/ps_hdmi_i/MIPI_RX_SS/mipi_csi2_rx_subsyst_0/U0/phy/inst/inst/bd_bab1_phy_0_rx_support_i/slave_rx.bd_bab1_phy_0_rx_hssio_i/inst/top_inst/bs_ctrl_top_inst/n5_rx_bit_ctrl_in1[39:0] has undriven bits 0:39.Related violations: <none>
解決 方法：
vivado 升級到2019.2 ，升級後，這兩個問題自動解決！
