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NAND(eMMC) can not be loaded after cold reset

yuanjun ren
Intellectual 730 points
Other Parts Discussed in Thread: DM3730, TPS65930


Hi,all
  
   processor: DM3730
   os:wince 6.0
   bsp version:BSP_A8_01_01_00
   iNAND:SANDISK(SDIN5C2-16G)
   power Management:TPS65930
 
  
  
   I provide my custom board with three MMC/SD/SDIO controller:  MMC/SD/SDIO1， MMC/SD/SDIO12， MMC/SD/SDIO3.
   I use MMC/SD/SDIO1 to control SD card, use MMC/SD/SDIO2 for Wifi,use MMC/SD/SDIO3 to achieve eMMC(iNand).
   The iNAND work normal after systerm  power on(i.e. DM3730  power on). Afer I striked the RSET KEY (i.e. I coldreseted the board),  the SYSTERM can boot normally,
   but the iNAND can not be found(i.e. these is no iNAND in wince explorer).
  
   As details,see the "schematic .pdf" and  "emmc driver".
   
   I am not sure  which aspects  the  reason  relate to,hardware or softerware?  who can give me a hint?
 

   Thanks