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    Subject[PATCH] usb: dwc3: Enable GBit Ethernet on Odroid XU4
    Note that it only works with USB_XHCI_PLATFORM=y. Also it needs a hard
    reset when coming from an unpatched kernel.

    This was included in the original patch in
    https://patchwork.kernel.org/patch/9992809/ but got dropped when
    accepted in d8c80bb3b55b phy: exynos5-usbdrd: Calibrate LOS levels for
    exynos5420/5800.

    Old behaviour:

    $ lsusb -t
    /: 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

    New behaviour:

    $ lsusb -t
    /: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=r8152, 5000M

    Tested on Debian unstable using u-boot-exynos (2018.11+dfsg-2) and Linux
    4.19.14.

    Signed-off-by: Jochen Sprickerhof <git@jochen.sprickerhof.de>
    ---

    Hi,

    I'm not sure why this it only works with the driver compiled into the
    kernel nor why it needs a hard reset or why it was the line was dropped
    when the patch was accepted. Would be great to get some feedback of the
    authors.

    Cheers Jochen

    drivers/usb/dwc3/core.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
    index a1b126f90261..0008bccc30aa 100644
    --- a/drivers/usb/dwc3/core.c
    +++ b/drivers/usb/dwc3/core.c
    @@ -1169,7 +1169,8 @@ static int dwc3_core_init_mode(struct dwc3 *dwc)
    dev_err(dev, "failed to initialize host\n");
    return ret;
    }
    - phy_calibrate(dwc->usb2_generic_phy);
    + if (dwc->usb2_generic_phy)
    + phy_calibrate(dwc->usb2_generic_phy);
    break;
    case USB_DR_MODE_OTG:
    INIT_WORK(&dwc->drd_work, __dwc3_set_mode);
    --
    2.20.1
    [unhandled content-type:application/pgp-signature]
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