On Wed, Aug 15, 2018 at 11:59:34AM +0200, Enric Balletbo i Serra wrote:
> This property is used when the otg-id pin is not connected. When this
> property is set it forces to set the B-Device Session Valid bit when the
> port works as device and clears that bit when the port works as host.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balle...@collabora.com>
> ---
> 
>  .../devicetree/bindings/phy/phy-rockchip-inno-usb2.txt       | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt 
> b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
> index 2d4808d3920b..55761f466c41 100644
> --- a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
> +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
> @@ -48,6 +48,11 @@ Optional properties:
>               See ./phy-bindings.txt for details.
>   - rockchip,utmi-avalid : boolean, use the avalid register to get vbus 
> status.
>                         Otherwise, use the bvalid register.
> + - rockchip,force-bvalid : boolean, set this to force the B-Device Session
> +                       Valid bit when the usb port is in device mode. This
> +                       is used when the otg-id pin is not connected.
> +                       Only supported in case of compatible being:
> +                       * "rockchip,rk3399-usb2phy"

Shouldn't you describe the property of the h/w that ID pin is not 
connected, rather than what you do with that information.

Is the pin not connected because it's a connector without ID pin? If so, 
that should be a property of the connector (or inferred from the 
connector compatible string).

Rob

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