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SubjectRe: [v3 PATCH] dt-binding: usb: add usb-role-switch property
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On Fri, 2019-05-17 at 16:27 +0300, Heikki Krogerus wrote:
> On Wed, May 08, 2019 at 05:17:44PM +0800, Chunfeng Yun wrote:
> > Add a property usb-role-switch to tell the driver that use
> > USB Role Switch framework to handle the role switch,
> > 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>
>
> Who is meant to pick this?

> Can you include this in your series where
> you introduce that USB Type-B GPIO connector driver?
>
Ok, I'll do it if need

> FWIW:
>
> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
>
> > ---
> > v3:
> > add property type, modify description suggested by Heikki
> >
> > v2:
> > describe it in terms of h/w functionality suggested by Rob
> >
> > 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 | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt
> > index 0a74ab8dfdc2..cf5a1ad456e6 100644
> > --- a/Documentation/devicetree/bindings/usb/generic.txt
> > +++ b/Documentation/devicetree/bindings/usb/generic.txt
> > @@ -30,6 +30,10 @@ 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: boolean, indicates that the device is capable of assigning
> > + the USB data role (USB host or USB device) for a given
> > + USB connector, such as Type-C, Type-B(micro).
> > + see connector/usb-connector.txt.
> >
> > This is an attribute to a USB controller such as:
> >
> > --
> > 2.21.0
>
> thanks,
>


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