[fpga-bank-87-88] FPGA_CLK_OUT can't be LVDS out from HD bank
The fact that HD banks do not support LVDS output means we cannot generate FPGA_CLK_OUT_P/N as an alternative source for Si5341. How about we swap FPGA_CLK_OUT_P/N with CPCIS_I2C_SCL/SDA (bank 28)? THen we can output FPGA_CLK_OUT_P/N generated by ODDR primitive.