diff --git a/projects/adrv9371x/a10soc/system_constr.sdc b/projects/adrv9371x/a10soc/system_constr.sdc
index d7ab191fd..24cf41281 100644
--- a/projects/adrv9371x/a10soc/system_constr.sdc
+++ b/projects/adrv9371x/a10soc/system_constr.sdc
@@ -5,7 +5,7 @@ create_clock -period "10.000 ns"  -name sys_clk_100mhz      [get_ports {sys_clk}
 create_clock -period  "8.139 ns"  -name ref_clk0_122mhz     [get_ports {ref_clk0}]
 create_clock -period  "8.139 ns"  -name ref_clk1_122mhz     [get_ports {ref_clk1}]
 create_clock -period  "7.503 ns"  -name hps_ddr_ref_clk_133mhz  [get_ports {hps_ddr_ref_clk}]
-create_clock -period  "7.503 ns"  -name sys_ddr_ref_clk_133mhz  [get_ports {sys_ddr_ref_clk}]
+create_clock -period "10.000 ns"  -name sys_ddr_ref_clk_100mhz  [get_ports {sys_ddr_ref_clk}]
 
 derive_pll_clocks
 derive_clock_uncertainty
diff --git a/projects/common/a10soc/a10soc_plddr4_dacfifo_qsys.tcl b/projects/common/a10soc/a10soc_plddr4_dacfifo_qsys.tcl
index 2b0c56064..cfff7a279 100644
--- a/projects/common/a10soc/a10soc_plddr4_dacfifo_qsys.tcl
+++ b/projects/common/a10soc/a10soc_plddr4_dacfifo_qsys.tcl
@@ -3,9 +3,9 @@
 
 add_instance sys_ddr4_cntrl altera_emif 16.0
 set_instance_parameter_value sys_ddr4_cntrl {PROTOCOL_ENUM} {PROTOCOL_DDR4}
-set_instance_parameter_value sys_ddr4_cntrl {PHY_DDR4_MEM_CLK_FREQ_MHZ} {1066.667}
+set_instance_parameter_value sys_ddr4_cntrl {PHY_DDR4_MEM_CLK_FREQ_MHZ} {800.0}
 set_instance_parameter_value sys_ddr4_cntrl {PHY_DDR4_DEFAULT_REF_CLK_FREQ} {0}
-set_instance_parameter_value sys_ddr4_cntrl {PHY_DDR4_USER_REF_CLK_FREQ_MHZ} {133.333}
+set_instance_parameter_value sys_ddr4_cntrl {PHY_DDR4_USER_REF_CLK_FREQ_MHZ} {100.0}
 set_instance_parameter_value sys_ddr4_cntrl {PHY_DDR4_RATE_ENUM} {RATE_QUARTER}
 set_instance_parameter_value sys_ddr4_cntrl {MEM_DDR4_FORMAT_ENUM} {MEM_FORMAT_UDIMM}
 set_instance_parameter_value sys_ddr4_cntrl {MEM_DDR4_DQ_WIDTH} {64}