Re: [PATCH v3 1/3] PCI: pciehp: Add support for disabling in-band presence
From: Mika Westerberg
Date: Mon Oct 21 2019 - 09:38:22 EST
On Thu, Oct 17, 2019 at 03:32:54PM -0400, Stuart Hayes wrote:
> From: Alexandru Gagniuc <mr.nuke.me@xxxxxxxxx>
>
> The presence detect state (PDS) is normally a logical or of in-band and
> out-of-band presence. As of PCIe 4.0, there is the option to disable
> in-band presence so that the PDS bit always reflects the state of the
> out-of-band presence.
>
> The recommendation of the PCIe spec is to disable in-band presence
> whenever supported.
>
> Signed-off-by: Alexandru Gagniuc <mr.nuke.me@xxxxxxxxx>
Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>