Re: [PATCH v1 01/11] dt-bindings: usb: Add device id for Genesys Logic hub controller

[Anand Moon <linux.amoon@gmail.com>]

Hi Matthias,

Thanks for the review comments

On Thu, 5 Jan 2023 at 04:25, Matthias Kaehlcke <mka@chromium.org> wrote:
>
> On Wed, Dec 28, 2022 at 03:59:17PM +0530, Anand Moon wrote:
> > Hi Icenowy,
> >
> > Thanks for the review comments
> >
> > On Wed, 28 Dec 2022 at 15:38, Icenowy Zheng <uwu@icenowy.me> wrote:
> > >
> > > 在 2022-12-28星期三的 10:03 +0000，Anand Moon写道：
> > > > Add usb hub device id for Genesys Logic, Inc. GL852G-OHG Hub USB 2.0
> > > > root hub and Genesys Logic, Inc. GL3523-QFN76 USB 3.1 root hub.
>
> nit: QFN 76 is one of the package options of the GL3523, I expect this
> binding to be applicable as well for other GL3523 variants, so I'd suggest
> to drop the suffix. Not sure what 'OHG' stands for, the Genesys website
> only lists a GL852G hub with different package types (none of them 'OHG'),
> so I'd say drop the suffix unless it is known that 'OHG' variant uses
> a different product id than other GL852G variants
>

Yes, I will be sure to do this reference, I just picked these from the
board schematics.

> > > >
> > > > Signed-off-by: Anand Moon <linux.amoon@gmail.com>
> > > > ---
> > > >  Documentation/devicetree/bindings/usb/genesys,gl850g.yaml | 2 ++
> > > >  1 file changed, 2 insertions(+)
> > > >
> > > > diff --git
> > > > a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
> > > > b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
> > > > index a9f831448cca..db009f3ef438 100644
> > > > --- a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
> > > > +++ b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
> > > > @@ -16,6 +16,8 @@ properties:
> > > >    compatible:
> > > >      enum:
> > > >        - usb5e3,608
> > > > +      - genesys,usb5e3,610
> > > > +      - genesys,usb5e3,620
> > >
> > > I don't think genesys, is needed here because usb5e3 means USB VID
> > > 0x05e3, which is already linked to Genesys Logic.
> > >
> >
> > Ok, I added this as genesys, is it part of the manufacturer or vendor name
> > which is most commonly used for adding vendor-specific compatible strings.
>
> That doesn't follow the generic USB binding, please drop 'genesys,'.
>

Yes, I will drop this in the next version.

> > > In addition, the control logic of these two hubs are needed to be
> > > verified.
> >
> > We were using gpio-hog to reset the USB hub, so now switch to USB onboard hub
> >
> > >
> > > And what's the status of the companion hub of the USB3 hub? Is it
> > > really a USB3-only hub, or is its USB2 part just equal to another USB3
> > > hub?
> > >
> > usb5e3,610 is USB 2.0 port hub present on Odroid C1 and Odroid C2 board
> >
> > usb5e3,620 is USB 3.1 port hub present on Odroid N2.
>
> Like Icenowy I would expect the GL3523 to provide also a 2.0 hub.
>
> What is the output of 'lsusb' on the Odroid N2?

alarm@odroid-n2:~$ lsusb -tv
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
        ID 05e3:0620 Genesys Logic, Inc. GL3523 Hub
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        ID 05e3:0610 Genesys Logic, Inc. Hub

Thanks

-Anand