linux-kernel - Re: [PATCH v3 1/8] dt-bindings: connector: usb-connector: add a gpio used to determine the Type-C port plug orientation

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Date:   Tue, 13 Jun 2023 10:54:05 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH v3 1/8] dt-bindings: connector: usb-connector: add a gpio
 used to determine the Type-C port plug orientation

On 13/06/2023 10:13, Krzysztof Kozlowski wrote:
> On 13/06/2023 09:55, 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.
>>
>> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> 
> Rob had here objections as these are bindings for the connector, not
> PMIC glink/altmode. I still doubt that Qualcomm USB Type-C connectors
> have such pin exposed. If you open the schematics, the GPIO is actually
> coming out from PMIC and is nowhere around the connector. Please drop my
> Ack.
> 
> This however could be a pin of the PMIC because it clearly is on the
> schematics.

Yes it comes from the PMIC, but this part of the PMIC is handled by
the PMIC_GLINK firmware service, so the logical place would be into
the pmic_glink node with a gpio array in order to handle multi-ports.

Thanks,
Neil

> 
> 
> 
> Best regards,
> Krzysztof
>