From: Greg KH <gregkh@linuxfoundation.org>
To: James <bjlockie@lockie.ca>
Cc: linux-usb <linux-usb@vger.kernel.org>
Subject: Re: problem with USB-C
Date: Wed, 12 Jan 2022 08:02:52 +0100 [thread overview]
Message-ID: <Yd59HLmparwNaok9@kroah.com> (raw)
In-Reply-To: <830aa508-5c20-c7c9-5ba9-04bcf5ac7178@lockie.ca>
On Tue, Jan 11, 2022 at 07:56:53PM -0500, James wrote:
> $ lsusb -tv
> /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
> ID 1d6b:0003 Linux Foundation 3.0 root hub
> /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
> ID 1d6b:0002 Linux Foundation 2.0 root hub
> /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
> ID 1d6b:0003 Linux Foundation 3.0 root hub
> /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 480M
> ID 1d6b:0002 Linux Foundation 2.0 root hub
> |__ Port 5: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid,
> 1.5M
> ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
> |__ Port 5: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid,
> 1.5M
> ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
> |__ Port 6: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid,
> 1.5M
> ID 30fa:0400
>
> With my USB3 drive plugged in to the USB-C port which is supposed to be
> USB3.1.
> https://asrock.com/MB/AMD/B450M%20Pro4/index.us.asp
>
> $ lsusb -tv
> /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
> ID 1d6b:0003 Linux Foundation 3.0 root hub
> /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
> ID 1d6b:0002 Linux Foundation 2.0 root hub
> /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
> ID 1d6b:0003 Linux Foundation 3.0 root hub
> /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 480M
> ID 1d6b:0002 Linux Foundation 2.0 root hub
> |__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=uas, 480M
> ID 0bc2:2321 Seagate RSS LLC Expansion Portable
> |__ Port 5: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid,
> 1.5M
> ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
> |__ Port 5: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid,
> 1.5M
> ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
> |__ Port 6: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid,
> 1.5M
> ID 30fa:0400
>
>
> Why are the hubs listed as Linux Foundation 3.0 root hubs and not 3.1 root
> hubs?
Because your devices do not advertise themselves as a USB 3.1 root hub.
Perhaps the documentation is incorrect?
thanks,
greg k-h
next prev parent reply other threads:[~2022-01-12 7:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-12 0:56 problem with USB-C James
2022-01-12 7:02 ` Greg KH [this message]
2022-01-12 15:40 ` Alan Stern
2022-01-12 19:39 ` James
2022-01-13 8:40 ` Greg KH
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