linux-kernel - Re: [PATCH v9 3/3] arm64: dts: qcom: sm8750: Add USB support for SM8750 QRD platform

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Message-ID: <4876cb9e-4b93-418e-963f-982fc7ba4a18@oss.qualcomm.com>
Date: Fri, 31 Oct 2025 13:18:51 +0530
From: Krishna Kurapati PSSNV <krishna.kurapati@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Wesley Cheng <wesley.cheng@....qualcomm.com>
Subject: Re: [PATCH v9 3/3] arm64: dts: qcom: sm8750: Add USB support for
 SM8750 QRD platform



On 10/29/2025 6:36 PM, Dmitry Baryshkov wrote:
> On Wed, Oct 29, 2025 at 06:00:02PM +0530, Krishna Kurapati PSSNV wrote:
>>
>>
>> On 10/29/2025 5:35 PM, Krzysztof Kozlowski wrote:
>>> On 29/10/2025 12:42, Krishna Kurapati PSSNV wrote:
>>>>
>>>>
>>>> On 10/29/2025 1:37 PM, Krzysztof Kozlowski wrote:
>>>>> On 24/10/2025 17:15, Krishna Kurapati wrote:
>>>>>> From: Wesley Cheng <wesley.cheng@....qualcomm.com>
>>>>>>
>>>>>> Enable USB support on SM8750 QRD variant.  The current definition
>>>>>> will start the USB controller in peripheral mode by default until
>>>>>> dependencies are added, such as USB role detection.
>>>>>>
>>>>>> Signed-off-by: Wesley Cheng <wesley.cheng@....qualcomm.com>
>>>>>> [Krishna: Flattened usb node QRD DTS]
>>>>>> Signed-off-by: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
>>>>>
>>>>> NAK.
>>>>>
>>>>> You ignored every previous tag - multiple reviews and tests, and then...
>>>>>
>>>>>> ---
>>>>>>     arch/arm64/boot/dts/qcom/sm8750-qrd.dts | 22 ++++++++++++++++++++++
>>>>>>     1 file changed, 22 insertions(+)
>>>>>>
>>>>>> diff --git a/arch/arm64/boot/dts/qcom/sm8750-qrd.dts b/arch/arm64/boot/dts/qcom/sm8750-qrd.dts
>>>>>> index 13c7b9664c89..fc5d12bb41a5 100644
>>>>>> --- a/arch/arm64/boot/dts/qcom/sm8750-qrd.dts
>>>>>> +++ b/arch/arm64/boot/dts/qcom/sm8750-qrd.dts
>>>>>> @@ -1054,3 +1054,25 @@ &ufs_mem_hc {
>>>>>>     	status = "okay";
>>>>>>     };
>>>>>> +
>>>>>> +&usb_1 {
>>>>>> +	dr_mode = "peripheral";
>>>>>
>>>>> You sent something different with issues.
>>>>>
>>>>> Really, this was a correct patch. Was reviewed. Why you decided to drop
>>>>> all this, drop everything which was correct?
>>>>>
>>>>> Your explanation:
>>>>> "- Removed obtained RB tags since the code has changed significantly."
>>>>> is just wrong. Almost NOTHING changed, except completely unimportant two
>>>>> node merging.
>>>>>
>>>>> NAK
>>>>>
>>>>
>>>>
>>>> Apologies Krzysztof,
>>>>
>>>> On first patch that adds changes to base DTSI, there were changes moving
>>>> to newer bindings and merging child node and parent node. I should've
>>>> removed RB tags received on that patch only. But I was over cautious and
>>>> misinterpreted the rules and removed them on the other patches as well.
>>>> Will be careful the next time.
>>>>
>>>> Also is there any issue with marking dr_mode as peripheral here in usb_1
>>>> node ?
>>>
>>> No, I think I looked at your other patch. Tthis was reviewed at v4 and
>>> v5, which then it was changed breaking sorting order. This one looks
>>> correct.
>>>
>>
>> Ok.
>>
>> I will send v10 tomorrow. Can I add yours and Dmitry's RB tag on the MTP and
>> QRD patches and then send it ? I will implement feedback from Dmitry on SOC
>> dtsi patch in v10.
> 
> Could you please answer the questions that I asked for this series?
> 

Replied to the questions and will update in v10, mentioned dependencies.
Also will add qmp pipe clock in gcc properties.

> Also, why is there no link to v8 in your cover letter?
> 

My bad. Missed adding it.

Will fix it up in next version.

Regards,
Krishna,