linux-kernel - Re: [PATCH 5/7] arm64: dts: qcom: sm8450-hdk: add pmic glink node

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Date:   Mon, 30 Jan 2023 11:59:58 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     neil.armstrong@...aro.org,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 5/7] arm64: dts: qcom: sm8450-hdk: add pmic glink node



On 30.01.2023 11:58, Neil Armstrong wrote:
> On 30/01/2023 11:40, Konrad Dybcio wrote:
>>
>>
>> On 30.01.2023 10:54, Neil Armstrong wrote:
>>> Add the pmic glink node linked with the DWC3 USB controller
>>> switched to OTG mode and tagged with usb-role-switch.
>>>
>>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>> Missing commit message
> 
> ??
> 
>>
>>> ---
>>>   arch/arm64/boot/dts/qcom/sm8450-hdk.dts | 34 ++++++++++++++++++++++++++++++++-
>>>   1 file changed, 33 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/sm8450-hdk.dts b/arch/arm64/boot/dts/qcom/sm8450-hdk.dts
>>> index 5bdc2c1159ae..5ab12c911bfe 100644
>>> --- a/arch/arm64/boot/dts/qcom/sm8450-hdk.dts
>>> +++ b/arch/arm64/boot/dts/qcom/sm8450-hdk.dts
>>> @@ -87,6 +87,31 @@ lt9611_3v3: lt9611-3v3-regulator {
>>>           enable-active-high;
>>>       };
>>>   +    pmic-glink {
>>> +        compatible = "qcom,sm8450-pmic-glink", "qcom,pmic-glink";
>>> +
>> You could remove this newline
>>> +        #address-cells = <1>;
>>> +        #size-cells = <0>;
>>> +
>>> +        connector@0 {
>>> +            compatible = "usb-c-connector";
>>> +            reg = <0>;
>>> +            power-role = "dual";
>>> +            data-role = "dual";
>>> +
>>> +            ports {
>>> +                #address-cells = <1>;
>>> +                #size-cells = <0>;
>> And add one here
>>
>>> +                port@0 {
>>> +                    reg = <0>;
>> And here
>>
> 
> Ack
> 
>>> +                    pmic_glink_dwc3_in: endpoint {
>>> +                        remote-endpoint = <&usb_1_dwc3_out>;
>>> +                    };
>>> +                };
>>> +            };
>>> +        };
>>> +    };
>>> +
>>>       vph_pwr: vph-pwr-regulator {
>>>           compatible = "regulator-fixed";
>>>           regulator-name = "vph_pwr";
>>> @@ -724,7 +749,14 @@ &usb_1 {
>>>   };
>>>     &usb_1_dwc3 {
>>> -    dr_mode = "peripheral";
>>> +    dr_mode = "otg";
>>> +    usb-role-switch;
>>> +
>>> +    port {
>> Hm, maybe this could be moved to 8450 dtsi?
> 
> Nop because it depends on the board layout, I think dr_mode
> and eventual connector description should really stay in
> the board dts.
I just meant the port definition, would it cause any side
effects to have it there?

Konrad
> 
> Thanks,
> Neil
> 
>>
>> Konrad
>>> +        usb_1_dwc3_out: endpoint {
>>> +              remote-endpoint = <&pmic_glink_dwc3_in>;
>>> +          };
>>> +    };
>>>   };
>>>     &usb_1_hsphy {
>>>
>