When an HLS RTL design using an AXI4-Lite slave interface is incorporated into a design in Vivado IP integrator, you can customize the block. From the block diagram in IP integrator, select the HLS block, right-click with the mouse button and select Customize Block.
The address width is by default configured to the minimum required size. Modify this to connect to blocks with address sizes less than 32-bit.
Figure 1. Customizing AXI4-Lite Slave Interfaces in IP Integrator