On Thu, 2019-05-02 at 14:49 -0500, Rob Herring wrote: > On Sun, Apr 28, 2019 at 08:27:46PM +0800, Chunfeng Yun wrote: > > Add a property usb-role-switch to tell Dual-Role controller driver > > that use USB Role Switch framework to handle the role switch between > > host mode and device mode, it's useful when the driver has already > > supported other ways, such as extcon framework etc. > > > > Cc: Biju Das <biju.das@xxxxxxxxxxxxxx> > > Cc: Yu Chen <chenyu56@xxxxxxxxxx> > > Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> > > --- > > v1: > > the property is discussed in: > > [v2,2/7] dt-bindings: usb: renesas_usb3: add usb-role-switch property > > https://patchwork.kernel.org/patch/10852497/ > > > > Mediatek and Hisilicon also try to use it: > > [v4,3/6] dt-bindings: usb: mtu3: add properties about USB Role Switch > > https://patchwork.kernel.org/patch/10918385/ > > [v4,6/6] usb: mtu3: register a USB Role Switch for dual role mode > > https://patchwork.kernel.org/patch/10918367/ > > > > [v6,10/13] usb: dwc3: Registering a role switch in the DRD code > > https://patchwork.kernel.org/patch/10909981/ > > --- > > Documentation/devicetree/bindings/usb/generic.txt | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt > > index 0a74ab8dfdc2..c73950b72513 100644 > > --- a/Documentation/devicetree/bindings/usb/generic.txt > > +++ b/Documentation/devicetree/bindings/usb/generic.txt > > @@ -30,6 +30,9 @@ Optional properties: > > optional for OTG device. > > - adp-disable: tells OTG controllers we want to disable OTG ADP, ADP is > > optional for OTG device. > > + - usb-role-switch: tells Dual-Role USB controller driver that we want to use > > + USB Role Switch framework to handle the role switch > > + between host mode and device mode. > > Please describe this in terms of h/w functionality, not drivers and > Linux things. Sorry for the late reply, v2 is posted > > Rob
