Re: [PATCH v4 1/2] dt-bindings: usb: Add binding for discrete onboard USB hubs

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On Mon, Sep 28, 2020 at 03:13:26PM -0700, Doug Anderson wrote:
> Hi,
> 
> On Mon, Sep 28, 2020 at 10:14 AM Matthias Kaehlcke <mka@xxxxxxxxxxxx> wrote:
> >
> > +examples:
> > +  - |
> > +    usb_hub: usb-hub {
> > +        compatible = "realtek,rts5411", "onboard-usb-hub";
> > +        vdd-supply = <&pp3300_hub>;

I will admit that using the name 'vdd' for a sole supply is somewhat
arbitrary, if anybody has better suggestions I'm open to it :)

> > +    };
> > +
> > +    usb_controller {
> 
> Super nitty nit: prefer dashes for node names.

ack

> > +        dr_mode = "host";
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        /* 2.0 hub on port 1 */
> > +        hub@1 {
> > +            compatible = "usbbda,5411";
> 
> Presumably we need something in the bindings for "usbbda,5411" ?

I'm not sure how this should look like in a .yaml. Rob, do you have any
suggestions?

Strictly speaking the compatible string isn't needed, the driver will match
the device without it based on VID/PID and the port.

> > +            reg = <1>;
> > +            hub = <&usb_hub>;
> > +        };
> > +
> > +        /* 3.0 hub on port 2 */
> > +        hub@2 {
> > +            compatible = "usbbda,411";
> 
> Presumably we need something in the bindings for "usbbda,411" ?

ditto



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