Can I route my UART to shared IO when using Early I/O release on Arria 10 SoC? - Can I route my UART to shared IO when using Early I/O release on Arria 10 SoC? Description Due to a problem in the SoC EDS software version 15.1 and later, routing your Arria® 10 HPS UART to Shared I/O can cause u-boot to halt if if Early I/O is enabled. Resolution To work around this problem in the SoC EDS software version 16.0 and earlier follow the steps below: Open uboot-socfpga/arch/arm/cpu/armv7/socfpga_arria10/cff.c and remove / comment out all printf/puts Rebuild u-boot-socfpga: make clean;make This problem is scheduled to be fixed in a future release of the SoC EDS software. Related Articles Is early io release supported on Arria 10 SoC in Quartus Prime 16.0? Custom Fields values: ['novalue'] Troubleshooting FB: 371156; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 16.1 15.1 ['Arria® 10 SX FPGA'] ['novalue'] ['novalue'] ['novalue']