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6678配置为pcie boot后windows(win7)找不到device id和vendor id

操作过程:

1.由于我采用的6678 硅版本为PG2.0,因此就没烧写IBL,而是直接将dsp配置为pcie boot模式

2.将6678的GPIO[15:0]配置为0001_1000_0000_1001,pciessen配置为1,dsp上电后,通过ccs读取其devstat寄存器值为0x00011809

3.将windows重启后,windiver扫描不到pcie的device id和vendor id
问题:
请问扫不到pcie是还有其他的操作吗?
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