Star,
Yes, the -B revision of TPS65217 does power the AM3354-ZCZ. But the -C and -D versions also power the AM3354-ZCZ.
The difference is whether you want to use DDR2 (-B version), DDR3 (-C), or DDR3L (-D) memory.
If "LPDDR1" memory operates at 1.8V (same as DDR2), then the -B version of the TPS65217 is the right choice.
For 20mA LED current, I recommend setting RISET1 = 130k (Low - 10mA) and RISET2 = 64.9k (High - 20mA) and flipping the the ISEL bit to '1' before enabling the LED strings by flipping ISINK_EN to '1'.
If only using USB_DC, I recommend re-wiring the schematic so VBUS of USB connects to the BAT pin, as shown in Figure 56 (Case 3) on page 77 of the datasheet:
This will prevent an unintended switch-over from USB to BAT during unexpected un-plug/re-plugs of the USB plug, which may cause a brown-out and temporarily lock-up the device.
Pressing the PB_IN push-button will resolve the lock-up because BAT is stuck as the power supply and requires a push-button press to begin the power-up sequence. Case 3 wiring will avoid the lock-up entirely, so it is preferred, but the Push-Button will still be required.
Please ensure connections to the CPU I/O follow the AM335x recommendations for PWR_EN, PB_IN, PGOOD, LDO_PGOOD, WAKEUP, INT, or MUX_OUT. For example, PWR_EN on the TPS65217 connect to PMIC_PWR_EN on the AM335x.
For additional resources, refer to:
TPS65217x Schematic Checklist
and
Powering the AM335x with the TPS65217x
