Other Parts Discussed in Thread: TPS65218D0, , TPS65217
Hi TI Champs
There's a request from Customer who met a boot failure on thier 1st custom board with AM3352 and TPS65218D0.
Their CPU board which referenced MYiR with TPS65217 works fine along with their separeated carrier board.
However they attached TPS65218D0 which was recommended by TI earlier. and it still doen't work on their 1st costom board.
When they tried to attach JTAG trace, It unable to pass dram_init().
They could not figure out any problamatic point from their schematic.
Could you please check the interface btw AM3352 and DDR including PMIC TPS65218D0?
Also attached their cpatured power signal level.
- DCDC1(VDD_CORE/1.1V): 1.11V
- DCDC2(VDD_MPU/1.1V): 1.11V
- DCDC3(VDD_VDDQ_DDR/1.35V): 1.36V
- DCDC4(VDD_3P3/3.3V): 3.32V
- DCDC5(VDD_RTC/1V): 0.969V
- DCDC6(VDDS_RTC/1.8V): 1.79V
- LDO1(VDD_1P8/1.8V): 1.78V
- LS1(VDDS_DDR/1.35V): 1.33V
DTNS MPU_ PMIC TPS65218D0 voltage_level_220720.zip
Please check the schematic and voltage level captured from PMIC.
Thanks.
Regards,
Jack