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dm8127 uboot sd卡启动不成功



自己做的8127的开发板,参考TI8148evm的原理图,从sd卡启动uboot的时候,总是卡在第一阶段uboot_min,多次复位偶尔能够成功启动进入第二阶段;跟sd相关的硬件配置都检查过了,不知道造成这种现象的原因是什么,有碰到过类似的问题的指点一下。下面是启动是串口输出:

U-Boot 2010.06 (Apr 07 2016 - 10:09:41)

TI8148-GP rev 2.1

ARM clk: 600MHz
DDR clk: 400MHz

DRAM:  512 MiB
MMC:   OMAP SD/MMC: 0
Using default environment

The 2nd stage U-Boot will now be auto-loaded
Please do not interrupt the countdown till TI8148_EVM prompt if 2nd stage is ald
Hit any key to stop autoboot:  0                                                
** Can't read from device 0 **                                                  
                                                                                
** Unable to use mmc 0:1 for fatload **                                         
## Starting application at 0x80800000 ...