linux-kernel - Re: [PATCH 3/7] dt-bindings: usb: Add Type-C switch binding

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Message-ID: <efdecc1e-223a-0fe0-37e4-24b2ae39e368@linaro.org>
Date:   Thu, 9 Jun 2022 08:43:30 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Prashant Malani <pmalani@...omium.org>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        bleung@...omium.org, swboyd@...omium.org,
        heikki.krogerus@...ux.intel.com,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Jonas Karlman <jonas@...boo.se>,
        José Expósito <jose.exposito89@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Maxime Ripard <maxime@...no.tech>,
        Neil Armstrong <narmstrong@...libre.com>,
        Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>, Pin-Yen Lin <treapking@...omium.org>,
        Robert Foss <robert.foss@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Tzung-Bi Shih <tzungbi@...gle.com>,
        Xin Ji <xji@...logixsemi.com>
Subject: Re: [PATCH 3/7] dt-bindings: usb: Add Type-C switch binding

On 08/06/2022 19:15, Prashant Malani wrote:
> Hi Krzysztof,
> 
> On Jun 08 11:18, Krzysztof Kozlowski wrote:
>> On 07/06/2022 21:00, Prashant Malani wrote:
>>> Introduce a binding which represents a component that can control the
>>> routing of USB Type-C data lines as well as address data line
>>> orientation (based on CC lines' orientation).
>>>
>>> Signed-off-by: Prashant Malani <pmalani@...omium.org>
>>> ---
>>>  .../devicetree/bindings/usb/typec-switch.yaml | 76 +++++++++++++++++++
>>>  1 file changed, 76 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/usb/typec-switch.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/usb/typec-switch.yaml b/Documentation/devicetree/bindings/usb/typec-switch.yaml
>>> new file mode 100644
>>> index 000000000000..60a600a63fef
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/usb/typec-switch.yaml
>>> @@ -0,0 +1,76 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/usb/typec-switch.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: USB Type-C Switch
>>> +
>>> +maintainers:
>>> +  - Prashant Malani <pmalani@...omium.org>
>>> +
>>> +description:
>>> +  A USB Type-C switch represents a component which routes USB Type-C data
>>> +  lines to various protocol host controllers (e.g USB, VESA DisplayPort,
>>> +  Thunderbolt etc.) depending on which mode the Type-C port, port partner
>>> +  and cable are operating in. It can also modify lane routing based on
>>> +  the orientation of a connected Type-C peripheral.
>>> +
>>> +properties:
>>> +  compatible:
>>> +    items:
>>
>> Single item, so no need for items.
> 
> I tried this initially, but dt_binding_check throws the following
> error:
> $ make dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/usb/typec-switch.yaml
> 
> LINT    Documentation/devicetree/bindings
> CHKDT   Documentation/devicetree/bindings/processed-schema.json
> /foo/linux/Documentation/devicetree/bindings/usb/typec-switch.yaml: properties:compatible: [{'enum': ['typec-switch']}] is not of type 'object', 'boolean'
> from schema $id: http://json-schema.org/draft-07/schema#
> SCHEMA Documentation/devicetree/bindings/processed-schema.json
> /foo/linux/Documentation/devicetree/bindings/usb/typec-switch.yaml: ignoring, error in schema: properties: compatible

Probably you messed up the syntax in the enum. Just open some examples:

git grep -C 3 'properties:' -- Documentation/devicetree/bindings/*/*yaml

Documentation/devicetree/bindings/ata/intel,ixp4xx-compact-flash.yaml

Best regards,
Krzysztof