linux-kernel - Re: [PATCH v8 4/4] arm64: boot: dts: qcom: pm8150b: Add DTS node for PMIC VBUS booster

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Date:   Thu, 20 Aug 2020 12:06:23 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...il.com>
To:     Wesley Cheng <wcheng@...eaurora.org>, sboyd@...nel.org,
        heikki.krogerus@...ux.intel.com, agross@...nel.org,
        robh+dt@...nel.org, gregkh@...uxfoundation.org,
        bjorn.andersson@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v8 4/4] arm64: boot: dts: qcom: pm8150b: Add DTS node for
 PMIC VBUS booster

On 20.08.2020 10:47, Wesley Cheng wrote:

[...]
>>> Add the required DTS node for the USB VBUS output regulator, which is
>>> available on PM8150B.  This will provide the VBUS source to connected
>>> peripherals.
>>>
>>> Signed-off-by: Wesley Cheng <wcheng@...eaurora.org>
>>> ---
>>>    arch/arm64/boot/dts/qcom/pm8150b.dtsi   | 6 ++++++
>>>    arch/arm64/boot/dts/qcom/sm8150-mtp.dts | 4 ++++
>>>    2 files changed, 10 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/pm8150b.dtsi
>>> b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
>>> index 053c659734a7..9e560c1ca30d 100644
>>> --- a/arch/arm64/boot/dts/qcom/pm8150b.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/pm8150b.dtsi
>>> @@ -53,6 +53,12 @@ power-on@800 {
>>>                status = "disabled";
>>>            };
>>>    +        pm8150b_vbus: dcdc@...0 {
>>
>>     s/dcdc/regulator/? What is "dcdc", anyway?
>>     The device nodes must have the generic names, according to the DT spec.
>>
> 
> Hi Sergei,
> 
> Thanks for the comment!

     You're welcome.

> DCDC is the label that we use for the DC to DC converter block, since
> the VBUS booster will output 5V to the connected devices.  Would it make
> more sense to have "dc-dc?"

    Better use s/th like "regulator-dcdc". As I said, the names should be 
generic, reflecting the device class.

> Thanks
> Wesley
> 
>>> +            compatible = "qcom,pm8150b-vbus-reg";
>>> +            status = "disabled";
>>> +            reg = <0x1100>;
>>> +        };
>>> +
>>>            pm8150b_typec: typec@...0 {
>>>                compatible = "qcom,pm8150b-usb-typec";
>>>                status = "disabled";
>> [...]

MBR, Sergei