linux-kernel - Re: [PATCH V2 1/4] dt-bindings: phy: Add QMP UFS PHY compatible for x1e80100

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Message-ID: <c106658b-7fe4-47cb-95b8-1970b397444a@oss.qualcomm.com>
Date: Mon, 5 Jan 2026 13:41:52 +0530
From: Pradeep Pragallapati <pradeep.pragallapati@....qualcomm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: vkoul@...nel.org, neil.armstrong@...aro.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, martin.petersen@...cle.com,
        andersson@...nel.org, konradybcio@...nel.org,
        taniya.das@....qualcomm.com, dmitry.baryshkov@....qualcomm.com,
        manivannan.sadhasivam@....qualcomm.com, linux-arm-msm@...r.kernel.org,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
        nitin.rawat@....qualcomm.com
Subject: Re: [PATCH V2 1/4] dt-bindings: phy: Add QMP UFS PHY compatible for
 x1e80100



On 1/2/2026 4:53 PM, Krzysztof Kozlowski wrote:
> On Wed, Dec 31, 2025 at 03:49:48PM +0530, Pradeep P V K wrote:
>> Add the QMP UFS PHY compatible string for Qualcomm x1e80100 SoC to
>> support its physical layer functionality for UFS. Use SM8550 as a
>> fallback since x1e80100 UFS PHY shares the same tech node, allowing
> 
> What is a "tech node"?
At brief - tech node represents a generation (e.g., 7nm, 5nm, 3nm) of 
semiconductor fabrication technology.
> 
>> reuse of existing UFS PHY support.
>>
>> Signed-off-by: Pradeep P V K <pradeep.pragallapati@....qualcomm.com>
>> ---
>>   .../devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml    | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
>> index fba7b2549dde..552dd663b7c9 100644
>> --- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
>> +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
>> @@ -28,6 +28,10 @@ properties:
>>             - enum:
>>                 - qcom,kaanapali-qmp-ufs-phy
>>             - const: qcom,sm8750-qmp-ufs-phy
>> +      - items:
>> +          - enum:
>> +              - qcom,x1e80100-qmp-ufs-phy
>> +          - const: qcom,sm8550-qmp-ufs-phy
> 
> 85 < 87, keep the order by last compatible. It was already screwed by
> Xin Liu in previous commit but you do not have to grow discouraged
> patterns.
> 
sure, i will update in my next patchset.

> Best regards,
> Krzysztof
>