linux-kernel - Re: [PATCH v2 6/9] dt-bindings: usb: Add binding for Via lab VL817 hub controller

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Message-ID: <CANAwSgRJ6Tek7NxSfsExkrWrQ94Ro8mmitoWm3wfrg7NKbO+Lw@mail.gmail.com>
Date:   Wed, 18 Jan 2023 17:25:14 +0530
From:   Anand Moon <linux.amoon@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-amlogic@...ts.infradead.org,
        Matthias Kaehlcke <mka@...omium.org>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Johan Hovold <johan@...nel.org>, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/9] dt-bindings: usb: Add binding for Via lab VL817
 hub controller

Hi Krzysztof,

Thanks for your review comments.

On Wed, 18 Jan 2023 at 13:49, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 18/01/2023 05:44, Anand Moon wrote:
> > The VIA Lab VL817 is a USB 3.1 Gen 1 hub and USB 2.0 hub
> > controller that features 4 downstream ports and 1 otg, with
> > an internal 5V regulator and has external reset pin.
>
> Subject: drop second/last, redundant "binding for". The "dt-bindings"
> prefix is already stating that these are bindings.
>
Ok
> >
> > Add a device tree binding for its USB protocol part.
> > The internal LDO is not covered by this and can just be modelled
> > as a fixed regulator.
> >
> > Add combo of USB 2.0 and USB 3.0 root hub using peer-hub.
> >
> > Signed-off-by: Anand Moon <linux.amoon@...il.com>
> > ---
> > v2 - fix the compatible string and fix the $id
> >    - update the commit message.
> >    - update the example for use peer-hub node because it
> >      combo of USB 2.0 and USB 3.0 hub.
> >    - rename the yaml file from vialab,vl817q7.yaml to vialab,vl817.yaml
> >      as q7 suffix is ued for USB 3.1 and q5 suffix is used for USB 2.0.
> > ---
> >  .../devicetree/bindings/usb/vialab,vl817.yaml | 69 +++++++++++++++++++
> >  1 file changed, 69 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/usb/vialab,vl817.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/usb/vialab,vl817.yaml b/Documentation/devicetree/bindings/usb/vialab,vl817.yaml
> > new file mode 100644
> > index 000000000000..5f9771e22058
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/usb/vialab,vl817.yaml
> > @@ -0,0 +1,69 @@
> > +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/usb/vialab,vl817.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Via labs VL817 USB 3.1 hub controller
> > +
> > +maintainers:
> > +  - Anand Moon <linux.amoon@...il.com>
> > +
> > +allOf:
> > +  - $ref: usb-device.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    items:
>
> Drop items
>
Ok,
> > +      - enum:
> > +          - usb2109,2817
> > +          - usb2109,817
> > +
> > +  reg: true
> > +
> > +  reset-gpios:
> > +    description: GPIO controlling the RESET# pin.
>
> maxItems
>
Ok,
> > +
> > +  vdd-supply:
> > +    description:
> > +      phandle to the regulator that provides power to the hub.
> > +
> > +  peer-hub:
> > +    $ref: '/schemas/types.yaml#/definitions/phandle'
>
> Drop quotes
>
Ok,
> > +    description:
> > +      phandle to the peer hub on the controller.
> > +
> > +required:
> > +  - peer-hub
> > +  - compatible
> > +  - reg
>
> Keep same order as in properties: part.
>
Ok
> > +
>
> Best regards,
> Krzysztof
>

I will update these in the next version.



-Anand