zedboard固化程序到QSPI出错的原因总结

ERROR(1):

    AP transaction timeout: ACK = 0x01,expected=0x02)

ERROR(1):

    AP transaction error (DPCTRL_STAT=0xf0000021)

ERROR(1):

    Could not stop the processor after reset

后发现是PL部分没有设置好，QSPI flash的feedback  clock线没有连