linux-kernel - Re: [PATCH v8 2/8] dt-bindings: phy: qcom,qmp-usb: Add IPQ9574 USB3 PHY

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Message-ID: <20230421101345.GB5813@varda-linux.qualcomm.com>
Date:   Fri, 21 Apr 2023 15:43:46 +0530
From:   Varadarajan Narayanan <quic_varada@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
CC:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <vkoul@...nel.org>,
        <kishon@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <gregkh@...uxfoundation.org>,
        <mturquette@...libre.com>, <sboyd@...nel.org>,
        <quic_wcheng@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v8 2/8] dt-bindings: phy: qcom,qmp-usb: Add IPQ9574 USB3
 PHY

On Thu, Apr 06, 2023 at 09:42:31AM +0200, Krzysztof Kozlowski wrote:
> On 05/04/2023 13:41, Varadarajan Narayanan wrote:
> > Add dt-bindings for USB3 PHY found on Qualcomm IPQ9574
> >
> > Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> > ---
> >  Changes in v8:
> > 	- Update clock names for ipq9574
> >
> >  Changes in v6:
> > 	- Made power-domains optional
> >
> > Note: In the earlier patch sets, had used the (legacy)
> > specification available in qcom,msm8996-qmp-usb3-phy.yaml. Moved
> > to newer specification in qcom,sc8280xp-qmp-usb3-uni-phy.yaml
> > ---
> >  .../phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml        | 43 +++++++++++++++++++---
> >  1 file changed, 37 insertions(+), 6 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml
> > index 16fce10..e902a0d 100644
> > --- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml
> > +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml
> > @@ -16,6 +16,7 @@ description:
> >  properties:
> >    compatible:
> >      enum:
> > +      - qcom,ipq9574-qmp-usb3-phy
> >        - qcom,sc8280xp-qmp-usb3-uni-phy
> >
> >    reg:
> > @@ -25,11 +26,7 @@ properties:
> >      maxItems: 4
> >
> >    clock-names:
> > -    items:
> > -      - const: aux
> > -      - const: ref
> > -      - const: com_aux
> > -      - const: pipe
> > +    maxItems: 4
> >
> >    power-domains:
> >      maxItems: 1
> > @@ -60,7 +57,6 @@ required:
> >    - reg
> >    - clocks
> >    - clock-names
> > -  - power-domains
>
> Power domains are required. Commit msg does not explain why this should
> be now optional.

Since IPQ9574 doesn't have power switches couldn't provide power-domains details.
So, had to make it optional to pass 'make dtbs_check'.

Thanks
Varada

> Best regards,
> Krzysztof
>