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[PATCH RFC 1/7] dt-bindings: connector: usb-connector: add a gpio used to determine the Type-C port plug orientation

Neil Armstrong posted 7 patches 2 years, 8 months ago
There is a newer version of this series
[PATCH RFC 1/7] dt-bindings: connector: usb-connector: add a gpio used to determine the Type-C port plug orientation
Posted by Neil Armstrong 2 years, 8 months ago 
On some platforms, the Type-C plug orientation is given on a GPIO line.

Document this optional Type-C connector property, and take the
assumption an active level represents an inverted/flipped orientation.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 Documentation/devicetree/bindings/connector/usb-connector.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
index ae515651fc6b..c3884eed6ba4 100644
--- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
+++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
@@ -114,6 +114,11 @@ properties:
     description: Set this property if the Type-C connector has no power delivery support.
     type: boolean
 
+  orientation-gpios:
+    description: An input gpio for Type-C connector orientation, used to detect orientation
+      of the Type-C connector. GPIO active level means "CC2" or Reversed/Flipped orientation.
+    maxItems: 1
+
   # The following are optional properties for "usb-c-connector" with power
   # delivery support.
   source-pdos:

-- 
2.34.1
Re: [PATCH RFC 1/7] dt-bindings: connector: usb-connector: add a gpio used to determine the Type-C port plug orientation
Posted by Dmitry Baryshkov 2 years, 8 months ago 
On 01/06/2023 17:07, Neil Armstrong wrote:
> On some platforms, the Type-C plug orientation is given on a GPIO line.
> 
> Document this optional Type-C connector property, and take the
> assumption an active level represents an inverted/flipped orientation.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> ---
>   Documentation/devicetree/bindings/connector/usb-connector.yaml | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
> index ae515651fc6b..c3884eed6ba4 100644
> --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
> +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
> @@ -114,6 +114,11 @@ properties:
>       description: Set this property if the Type-C connector has no power delivery support.
>       type: boolean
>   
> +  orientation-gpios:
> +    description: An input gpio for Type-C connector orientation, used to detect orientation
> +      of the Type-C connector. GPIO active level means "CC2" or Reversed/Flipped orientation.
> +    maxItems: 1

Should this be a property of the connector or of the parent device node? 
I mean, unlike usb-b-connector (where ID and Vbus can be simple GPIOs 
nearly directly connected to the pins of the connector) for the USB-C 
the orientation is not a connector's GPIO, but rather some additional 
not elementary logic.

> +
>     # The following are optional properties for "usb-c-connector" with power
>     # delivery support.
>     source-pdos:
> 

-- 
With best wishes
Dmitry
Re: [PATCH RFC 1/7] dt-bindings: connector: usb-connector: add a gpio used to determine the Type-C port plug orientation
Posted by Neil Armstrong 2 years, 8 months ago 
On 03/06/2023 22:22, Dmitry Baryshkov wrote:
> On 01/06/2023 17:07, Neil Armstrong wrote:
>> On some platforms, the Type-C plug orientation is given on a GPIO line.
>>
>> Document this optional Type-C connector property, and take the
>> assumption an active level represents an inverted/flipped orientation.
>>
>> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
>> ---
>>   Documentation/devicetree/bindings/connector/usb-connector.yaml | 5 +++++
>>   1 file changed, 5 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
>> index ae515651fc6b..c3884eed6ba4 100644
>> --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
>> +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
>> @@ -114,6 +114,11 @@ properties:
>>       description: Set this property if the Type-C connector has no power delivery support.
>>       type: boolean
>> +  orientation-gpios:
>> +    description: An input gpio for Type-C connector orientation, used to detect orientation
>> +      of the Type-C connector. GPIO active level means "CC2" or Reversed/Flipped orientation.
>> +    maxItems: 1
> 
> Should this be a property of the connector or of the parent device node? I mean, unlike usb-b-connector (where ID and Vbus can be simple GPIOs nearly directly connected to the pins of the connector) for the USB-C the orientation is not a connector's GPIO, but rather some additional not elementary logic.

I don't see the issue, orientation is a property of the connector itself,
even if it's provided by another ic.

Neil

> 
>> +
>>     # The following are optional properties for "usb-c-connector" with power
>>     # delivery support.
>>     source-pdos:
>>
>
Re: [PATCH RFC 1/7] dt-bindings: connector: usb-connector: add a gpio used to determine the Type-C port plug orientation
Posted by Dmitry Baryshkov 2 years, 8 months ago 
On 05/06/2023 10:30, Neil Armstrong wrote:
> On 03/06/2023 22:22, Dmitry Baryshkov wrote:
>> On 01/06/2023 17:07, Neil Armstrong wrote:
>>> On some platforms, the Type-C plug orientation is given on a GPIO line.
>>>
>>> Document this optional Type-C connector property, and take the
>>> assumption an active level represents an inverted/flipped orientation.
>>>
>>> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
>>> ---
>>>   Documentation/devicetree/bindings/connector/usb-connector.yaml | 5 
>>> +++++
>>>   1 file changed, 5 insertions(+)
>>>
>>> diff --git 
>>> a/Documentation/devicetree/bindings/connector/usb-connector.yaml 
>>> b/Documentation/devicetree/bindings/connector/usb-connector.yaml
>>> index ae515651fc6b..c3884eed6ba4 100644
>>> --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
>>> +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
>>> @@ -114,6 +114,11 @@ properties:
>>>       description: Set this property if the Type-C connector has no 
>>> power delivery support.
>>>       type: boolean
>>> +  orientation-gpios:
>>> +    description: An input gpio for Type-C connector orientation, 
>>> used to detect orientation
>>> +      of the Type-C connector. GPIO active level means "CC2" or 
>>> Reversed/Flipped orientation.
>>> +    maxItems: 1
>>
>> Should this be a property of the connector or of the parent device 
>> node? I mean, unlike usb-b-connector (where ID and Vbus can be simple 
>> GPIOs nearly directly connected to the pins of the connector) for the 
>> USB-C the orientation is not a connector's GPIO, but rather some 
>> additional not elementary logic.
> 
> I don't see the issue, orientation is a property of the connector itself,
> even if it's provided by another ic.

I'd argue that the _gpio_ is not a property of the connector itself. 
Generic USB-C connector will not have such orientation GPIO. But 
probably it is a minor issue.

>>
>>> +
>>>     # The following are optional properties for "usb-c-connector" 
>>> with power
>>>     # delivery support.
>>>     source-pdos:
>>>
>>
> 

-- 
With best wishes
Dmitry
Re: [PATCH RFC 1/7] dt-bindings: connector: usb-connector: add a gpio used to determine the Type-C port plug orientation
Posted by Krzysztof Kozlowski 2 years, 8 months ago 
On 01/06/2023 16:07, Neil Armstrong wrote:
> On some platforms, the Type-C plug orientation is given on a GPIO line.
> 


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Patchew 2.1-devel-b67e4c2

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