[+cc Pratyush, Yinghai, Alex, Rajat]
On Wed, Nov 26, 2014 at 7:57 AM, shiv prakash Agarwal
<chhotu.shiv@xxxxxxxxx> wrote:
> Hi All,
>
> Is anybody aware of any pcie card which gets detected by root port i.e
> link is up only when any device is connected to card? For example:
> PCIE USB3 card link is up only when a usb3 device is connected to it.
>
> Is it possible at least? Or card link will always be up whether any
> device is connected to it or not?
Yes, I think that's possible. This is similar to the situation Rajat
has where the link state of a device can be controlled by some
external entity: e48f1b67f668 ("PCI: pciehp: Use link change
notifications for hot-plug and removal").
Bjorn
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