linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am62a7-sk: Enable dual role support for Type-C port

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Date:   Tue, 25 Jul 2023 13:53:14 +0530
From:   Ravi Gunasekaran <r-gunasekaran@...com>
To:     Roger Quadros <rogerq@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "heikki.krogerus@...ux.intel.com" <heikki.krogerus@...ux.intel.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: ti: k3-am62a7-sk: Enable dual role support
 for Type-C port



On 7/25/2023 1:13 PM, Roger Quadros wrote:
>
> On 25/07/2023 07:19, Ravi Gunasekaran wrote:
>>
>> On 7/24/2023 7:27 PM, Krzysztof Kozlowski wrote:
>>> On 24/07/2023 13:51, Ravi Gunasekaran wrote:
>>>> USB0 is interfaced with a Type-C DRP connector and is managed via a
>>>> USB PD controller. Add support for the Type-C port with dual data
>>>> and power sink role.
>>>>
>>>> Signed-off-by: Ravi Gunasekaran <r-gunasekaran@...com>
>>>> ---
>>>>  arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 33 +++++++++++++++++++++++++
>>>>  1 file changed, 33 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
>>>> index d2cca6182738..b478b794de00 100644
>>>> --- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
>>>> +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
>>>> @@ -226,6 +226,24 @@
>>>>  	pinctrl-names = "default";
>>>>  	pinctrl-0 = <&main_i2c0_pins_default>;
>>>>  	clock-frequency = <400000>;
>>>> +
>>>> +	typec_pd0:tps6598x@3f {
>> Thanks for reviewing the patch.
>>
>>> Missing space after:
>> I will fix this in v2.
>>
>>> Node names should be generic. See also an explanation and list of
>>> examples (not exhaustive) in DT specification:
>>> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
>> Thanks for pointing to the section. I checked it and also few other node names
>> in the existing DTs.
>> TPS6598 is a USB Type C and Power Delivery Controller. So does a node name
>> "type-c-pd-controller" sound fine?
> Type-c is irrelevant in node name.
> The name needs to indicate it has something to do with USB, Power Control and Role control.
>
> e.g.
> usb-power-controller
> or
> usb-role-controller
> ?

I will use the node name "usb-power-controller'.

>
>>> Best regards,
>>> Krzysztof
>>>
>> Regards,
>> Ravi