On Thu, Oct 13, 2016 at 4:29 PM, John Stultz <john.stultz@xxxxxxxxxx> wrote: > From: Chen Yu <chenyu56@xxxxxxxxxx> > > The Hi6220's usb controller is limited in that it does not > automatically autonegotiate the usb speed. Thus it requires a > quirk so that we can manually negotiate the best usb speed for > the attached device. > > Cc: Wei Xu <xuwei5@xxxxxxxxxxxxx> > Cc: Guodong Xu <guodong.xu@xxxxxxxxxx> > Cc: Amit Pundir <amit.pundir@xxxxxxxxxx> > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > Cc: Mark Rutland <mark.rutland@xxxxxxx> > Cc: John Youn <johnyoun@xxxxxxxxxxxx> > Cc: Douglas Anderson <dianders@xxxxxxxxxxxx> > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Cc: linux-usb@xxxxxxxxxxxxxxx > Signed-off-by: Chen Yu <chenyu56@xxxxxxxxxx> > Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> > --- > arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 1 + > drivers/usb/dwc2/core.h | 7 +++ > drivers/usb/dwc2/hcd.c | 75 +++++++++++++++++++++++++++++++ > drivers/usb/dwc2/platform.c | 3 ++ > 4 files changed, 86 insertions(+) > > diff --git a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi > index 17839db..2c8f435 100644 > --- a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi > +++ b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi > @@ -752,6 +752,7 @@ > g-np-tx-fifo-size = <128>; > g-tx-fifo-size = <128 128 128 128 128 128>; > interrupts = <0 77 0x4>; > + hi6220,change_speed_quirk; I also realize I'm missing the DT binding documentation for this, but I wanted to get a rough idea if this approach was ok first. On the next submission (if there aren't major objections to the approach) I can split the binding documentation and dts change into different patches. thanks -john -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
