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can't boot from SD card

youyou
Prodigy 50 points
Other Parts Discussed in Thread: OMAP3530

Hi,

     I designed a new board with omap3530, using TPS65930 PMIC chip for OMAP3530 processor.Using MMC1 port for SD card.  After power up

PMIC voltages VMMC1,is showing 0V. then insert SD card, VMMC1 still shows 0V.

Please let me know what might be the issue for the above.