Bug#918800: PROBLEM: USB 3.0 NIC operates only at USB 2.0 speed on Odroid HC1

["Steinar H. Gunderson" <sesse@debian.org>]

On Sat, Feb 02, 2019 at 01:39:06PM +0100, Benjamin Drung wrote:
> The Odroid HC1 ARM board contains a JMicron JMS578 USB 3.0 to SATA
> Bridge and a Realtek Gbps Ethernet device connected to an USB 3.0 host.
> The SATA bridge works correctly at USB 3.0 speed, but the Ethernet
> controller operates only at USB 2.0 speed. I tracked this behaviour down
> to the CONFIG_USB_XHCI_PLATFORM kernel configuration.

I have the same problem with the ODROID XU4, which also includes a dwc3 and
an 8152 (it's probably dwc3-specific; the driver has been problematic
before). I haven't checked whether CONFIG_USB_XHCI_PLATFORM=y helps, though.

Linux liadroid 4.19.0-4-armmp-lpae #1 SMP Debian 4.19.28-2 (2019-03-15) armv7l GNU/Linux

/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=r8152, 480M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/2p, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/2p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=exynos-ohci/3p, 12M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=exynos-ehci/3p, 480M

/* Steinar */
-- 
Homepage: https://www.sesse.net/