如题,我们用81xx的pcie作为RC端,接了一个EP端的设备。如果EP端的设备出问题了,我们会将EP端断电或复位,而不想让81xx也复位,EP端设备重启后,81xx还能检测到吗?谢谢
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如题,我们用81xx的pcie作为RC端,接了一个EP端的设备。如果EP端的设备出问题了,我们会将EP端断电或复位,而不想让81xx也复位,EP端设备重启后,81xx还能检测到吗?谢谢
http://processors.wiki.ti.com/index.php/DM81xx_AM38xx_PCI_Express_Root_Complex_Driver_User_Guide
check this:
Note-3: DM81xx PCIe hardware does not support hot plug and if an EP directly connected to the DM81xx RC goes down (e.g., powered down or disabled), the complete PCIe h/w initialization needs to be repeated and PCI enumeration re-triggered. This is NOT SUPPORTED by the RC driver and will require code modification to handle such cases.