Configuring PCI Express switch over I2C, before PCI enumeration

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Hello list,

I want to configure a PCI Express switch over I2C before the PCI enumeration begins. I believe such configuration over I2C before PCI enumeration can be very helpful in features like configuring non-transparent ports and virtual PCI domains .

My question is if such a framework already exists that allows this? Also, if you can point me to an example platform code where this may have already been done, that shall be really great!

Thanks,

Rajat 


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