RE: [PATCH v4 02/13] dt-bindings: usb: add documentation for typec port controller(TCPCI)

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> -----Original Message-----
> From: Rob Herring [mailto:robh@xxxxxxxxxx]
> Sent: 2018年4月16日 22:28
> To: Jun Li <jun.li@xxxxxxx>
> Cc: gregkh@xxxxxxxxxxxxxxxxxxx; heikki.krogerus@xxxxxxxxxxxxxxx;
> linux@xxxxxxxxxxxx; a.hajda@xxxxxxxxxxx; shufan_lee@xxxxxxxxxxx; Peter
> Chen <peter.chen@xxxxxxx>; devicetree@xxxxxxxxxxxxxxx;
> linux-usb@xxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx>;
> devel@xxxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH v4 02/13] dt-bindings: usb: add documentation for typec
> port controller(TCPCI)
> 
> On Mon, Apr 16, 2018 at 6:54 AM, Jun Li <jun.li@xxxxxxx> wrote:
> > Hi
> >> -----Original Message-----
> >> From: Rob Herring [mailto:robh@xxxxxxxxxx]
> >> Sent: 2018年4月10日 4:04
> >> To: Jun Li <jun.li@xxxxxxx>
> >> Cc: gregkh@xxxxxxxxxxxxxxxxxxx; heikki.krogerus@xxxxxxxxxxxxxxx;
> >> linux@xxxxxxxxxxxx; a.hajda@xxxxxxxxxxx; shufan_lee@xxxxxxxxxxx;
> >> Peter Chen <peter.chen@xxxxxxx>; devicetree@xxxxxxxxxxxxxxx;
> >> linux-usb@xxxxxxxxxxxxxxx; dl-linux-imx <linux-imx@xxxxxxx>;
> >> devel@xxxxxxxxxxxxxxxxxxxx
> >> Subject: Re: [PATCH v4 02/13] dt-bindings: usb: add documentation for
> >> typec port controller(TCPCI)
> >>
> >> On Thu, Mar 29, 2018 at 12:06:07AM +0800, Li Jun wrote:
> 
> [...]
> 
> >> > +ptn5110@50 {
> >> > +   compatible = "usb-tcpci,ptn5110";
> >> > +   reg = <0x50>;
> >> > +   interrupt-parent = <&gpio3>;
> >> > +   interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
> >> > +
> >> > +   usb_con: connector {
> >>
> >> How is the OF graph done in this case? You need some link to the USB
> controller.
> >
> > The platform(i.MX8MQ EVK) for this is still on the way of start
> > upstream, I was Planning to add this part with enabling USB3 function,
> > as of how this will be done, I only have usb3 ss data(no display port or
> Sideband), is something like below OK?
> >
> > typec: ptn5110@50 {
> >         compatible = "nxp,ptn5110";
> >         ...
> >
> >         usb_con: connector {
> >                 compatible = "usb-c-connector";
> >                 label = "USB-C";
> >                 ...
> >
> >                 ports {
> >                         #address-cells = <1>;
> >                         #size-cells = <0>;
> >
> >                         port@1 {
> >                                 reg = <1>;
> >                                 usb_con_ss: endpoint {
> >                                 remote-endpoint = <&usb3_phy_ss>;
> >                                 };
> >                         };
> >                 };
> >         };
> > };
> >
> > &usb3_phy0 {
> >         status = "okay";
> >
> >         port {
> >                 usb3_phy_ss: endpoint {
> 
> Normally, the graph connection would be to the USB controller, not the phy as
> the phy is just referred to with a "phys" property.

Understood, I will put this into a USB controller node. Thanks.

Jun
> 
> >                         remote-endpoint = <&usb_con_ss>;
> >                 };
> >         };
> > }
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