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Date:   Fri, 26 Feb 2021 09:38:48 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Longfang Liu <liulongfang@huawei.com>
Cc:     mathias.nyman@intel.com, linux-usb@vger.kernel.org,
        yisen.zhuang@huawei.com, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] USB:XHCI:Modify XHCI driver for USB2.0 controller
Message-ID: <YDizmDmu6Kh264Pv@kroah.com>
References: <1614327697-1021-1-git-send-email-liulongfang@huawei.com>
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On Fri, Feb 26, 2021 at 04:21:37PM +0800, Longfang Liu wrote:
> Our current XHCI hardware controller has been customized to only
> support USB 2.0 ports.

That sounds like a spec violation, right?  Why do you want to do this?

greg k-h