linux-kernel - Intel GemniLake xHCI connected devices can never wake up the system from suspend

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Message-ID: <CAB4CAwf_k-WsF3zL4epm9TKAOu0h=Bv1XhXV_gY3bziOo_NPKA@mail.gmail.com>
Date:   Thu, 15 Mar 2018 12:40:49 +0800
From:   Chris Chiu <chiu@...lessm.com>
To:     mathias.nyman@...el.com, gregkh@...uxfoundation.org,
        linux-usb@...r.kernel.org,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        Linux Upstreaming Team <linux@...lessm.com>
Subject: Intel GemniLake xHCI connected devices can never wake up the system
 from suspend

Hi,
    I  have a ASUS AIO V222GA and another Acer Desktop XC-830 both
have Intel CPU J5005 and they both hit the same problem. The XHCI
connected USB keyboard/mouse can never wakeup the system from suspend.
It reminds me that similiar thing happens on ApolloLake too which
needs the XHCI_PME_STUCK_QUIRK to get it work. It's also mentioned in
https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/pentium-celeron-n-series-spec-update.pdf
page #14 for N-seris intel CPU. And I also find the same problem
description in https://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/silver-celeron-spec-update.pdf
page #16 for J-series Intel CPU. Seems that they have different
workaround so I can not simply apply XHCI_PME_STUCK_QUIRK to make it
work.

    Anyone can help here?

Chris