target_freq : 0x0; /* Step5: Set SWCT.sw_done to 0 */ reg32_write(DDRC_SWCTL(0), 0x00000000); /* Set the default boot frequency point */ clrsetbits_le32(DDRC_DFIMISC(0), (0x1f << 8), target_freq << 8); /* Step6: Set DFIMISC.dfi_init_complete_en to 0 */ clr...
DDRC_SWCTL(0), 0x00000000); /* Set the default boot frequency point */ clrsetbits...
Solved: Hi expert I have a question about DDR frequency setting. my hardware platform: SOC: imx8dx DDR: MT53D512M16D1DS (DDR model is consistent with
I tried to modify the RPA by changing number of frequency setpoints from 2 to 1 : But MSCALE_DDR_Tool denied to run the stress test : I then changed the Clock to specific value of my DDR4 (1600) instead of Default: but the ddr4_timing.c is the same as before (i.e 13...
2. Set the PhyControl0.ctrl_start_pointand PhyControl0.ctrl_incbit-fields to correct value according to clock frequency. Set the PhyControl0.ctrl_dll_onbit-field to ‘1’ to turn on thePHY DLL. 3. DQS Cleaning: Set the PhyControl1.ctrl_shiftcand PhyControl1.ctrl_offsetcbit-fields to...
, whereas the PLL has larger granularity (1/FVCO/8 = 130ps : assuming a 960MHz VCO frequency...
Selecting F1 will activate the Frequency setup menu: This menu is similar to the SDRAM frequency setup menu. In this example the user selects a frequency 248MHz. Pressing F1 will restart Basic Test at 248MHz. Currently, the maximum frequency for the DDR test is set to 266MHz, but higher...
Starting LSB: Set the CPU Frequency Scaling governor to "ondemand"... Starting Restore /etc/resolv.conf i...re the ppp link was shut down... Starting LSB: sync_ntp_rtc... [ OK ] Started D-Bus System Message Bus. Starting LSB: add swap at first boot... Starting Permit User ...
step2. Set the PhyControl0.ctrl_start_point and PhyControl0.ctrl_inc bit-fields to correct value according to clock frequency. Set the PhyControl0.ctrl_dll_on bit-field to ‘1’ to turn on the PHY DLL. 根据时钟的频率,设置PhyControl0.ctrl_start_point and PhyControl0.ctrl_inc 字段为正...
Frequency DDR4 frequency can be set with the following constraints: • A frequency between 625 MHz and 1200 MHz, knowing that 625 MHz is the DDR4 lower limit with DLL ON. • DDR4 with DLL off when the frequency is equal to 125 MHz or less. Impedance RON is set to 40 ...