| Message ID | 5756e05930f5e6a3940ad9d019399c8e63d24f18.1556454324.git.chunfeng.yun@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | dt-binding: usb: add usb-role-switch property | expand |
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@bp.renesas.com> > Cc: Yu Chen <chenyu56@huawei.com> > Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> > --- > 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. Rob
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@bp.renesas.com> > > Cc: Yu Chen <chenyu56@huawei.com> > > Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> > > --- > > 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
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. This is an attribute to a USB controller such as:
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@bp.renesas.com> Cc: Yu Chen <chenyu56@huawei.com> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> --- 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(+)