linux-kernel - Re: [PATCH 1/2] dt-bindings: phy: qcom,qmp: Mark '#clock-cells' as a 'optional' property

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Message-ID: <a6d28a2e-69fc-9bdf-da0d-28be35d9bfc2@linaro.org>
Date:   Sun, 27 Feb 2022 02:38:21 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, bhupesh.linux@...il.com,
        agross@...nel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-phy@...ts.infradead.org,
        robh+dt@...nel.org, Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vinod Koul <vkoul@...nel.org>
Subject: Re: [PATCH 1/2] dt-bindings: phy: qcom,qmp: Mark '#clock-cells' as a
 'optional' property

On 25/02/2022 12:16, Bhupesh Sharma wrote:
> Hi Dmitry,
> 
> Thanks for your review comments.
> 
> On Thu, 24 Feb 2022 at 20:22, Dmitry Baryshkov
> <dmitry.baryshkov@...aro.org> wrote:
>>
>> On Thu, 24 Feb 2022 at 15:33, Bhupesh Sharma <bhupesh.sharma@...aro.org> wrote:
>>>
>>> Since '#clock-cells' is not a required property for several
>>> QCoM boards supporting qmp-phy(s) (for e.g. sm8150, sm8250 or sm8350 SoC
>>> based boards), mark it as an optional property instead.
>>
>> I believe the description is not correct. the clock-cells should not
>> be used at all, so it should be removed from the root node.
> 
> Hmm.. 'clock-cells' is still used for describing qmp phy pcie nodes for certain
> devices like 'msm8996.dtsi'. I am not sure if removing it would impact existing
> dts files. But let me try cleaning them up in v2.

Checked. Unless I'm mistaken, msm8996.dtsi doesn't use #clock-cells in 
root QMP PHY nodes.

> 
>> Also we should describe phy@ properties.
> 
> Sure, I will add them in v2.
> 
> Regards,
> Bhupesh
> 
>>>
>>> This fixes the following '$ make dtbs_check' warning(s):
>>>
>>> sm8350-microsoft-surface-duo2.dt.yaml: phy@...7000:
>>>    '#clock-cells' is a required property
>>>
>>> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
>>> Cc: Vinod Koul <vkoul@...nel.org>
>>> Cc: Rob Herring <robh+dt@...nel.org>
>>> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
>>> ---
>>>   Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml | 1 -
>>>   1 file changed, 1 deletion(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml
>>> index 9e0f60e682c4..746a929c63bb 100644
>>> --- a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml
>>> +++ b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml
>>> @@ -115,7 +115,6 @@ patternProperties:
>>>   required:
>>>     - compatible
>>>     - reg
>>> -  - "#clock-cells"
>>>     - "#address-cells"
>>>     - "#size-cells"
>>>     - ranges
>>> --
>>> 2.35.1
>>>
>>
>>
>> --
>> With best wishes
>> Dmitry


-- 
With best wishes
Dmitry