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6678与K7的SRIO通信,port 不能ok



用的是KeyStone的例程,修改了参考时钟为250M,速度设置为2.5G,看了下好像MPY和RATE都是自动算出来的吧,配置为port 0为FPGA与DSP间通信,port1短接进行FPGA自发自收(成功),port2短接进行DSP自发自收(SRIO_EXTERNAL_LINE_LOOPBACK模式测试成功)。可是DSP与FPGA始终不能port OK ,一直卡在下面这一句话: while(0==(gpSRIO_regs->RIO_SP[i].RIO_SP_ERR_STAT&CSL_SRIO_RIO_SP_ERR_STAT_PORT_OK_MASK)),看了论坛上很多人都有类似问题,总没有找到解决方法,望大神指导!