linux-kernel - Re: [PATCH v3 2/8] dt-bindings: phy: qcom,qmp-usb: Add IPQ9574 USB3 PHY

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Date:   Thu, 23 Mar 2023 12:23:01 +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 v3 2/8] dt-bindings: phy: qcom,qmp-usb: Add IPQ9574 USB3
 PHY

On Thu, Mar 23, 2023 at 07:42:37AM +0100, Krzysztof Kozlowski wrote:
> On 23/03/2023 07:37, Varadarajan Narayanan wrote:
> > On Wed, Mar 22, 2023 at 10:52:44PM +0100, Krzysztof Kozlowski wrote:
> >> On 22/03/2023 11:44, Varadarajan Narayanan wrote:
> >>> Add dt-bindings for USB3 PHY found on Qualcomm IPQ9574
> >>>
> >>> Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> >>>
> >>> ---
> >>>  Changes in v2:
> >>> 	- Updated sections missed in previous patch
> >>> ---
> >>>  .../bindings/phy/qcom,msm8996-qmp-usb3-phy.yaml    | 22 ++++++++++++++++++++++
> >>>  1 file changed, 22 insertions(+)
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb3-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb3-phy.yaml
> >>> index e81a382..beae44c 100644
> >>> --- a/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb3-phy.yaml
> >>> +++ b/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb3-phy.yaml
> >>> @@ -21,6 +21,7 @@ properties:
> >>>      enum:
> >>>        - qcom,ipq6018-qmp-usb3-phy
> >>>        - qcom,ipq8074-qmp-usb3-phy
> >>> +      - qcom,ipq9574-qmp-usb3-phy
> >>>        - qcom,msm8996-qmp-usb3-phy
> >>>        - qcom,msm8998-qmp-usb3-phy
> >>>        - qcom,qcm2290-qmp-usb3-phy
> >>> @@ -204,6 +205,27 @@ allOf:
> >>>          compatible:
> >>>            contains:
> >>>              enum:
> >>> +              - qcom,ipq9574-qmp-usb3-phy
> >>> +    then:
> >>> +      properties:
> >>> +        clocks:
> >>> +          maxItems: 2
> >>
> >> toplevel defines minItems as 3, so are you sure this works? Did you test it?
> >
> > Yes, this is tested. Able to do I/O.
>
> Bindings do not impact on whether you can or can not do IO, so I meant
> tested as DTS is compliant with bindings. I assume it was not, so please
> test bindings and DTS before sending new version.
> see Documentation/devicetree/bindings/writing-schema.rst for instructions

Sorry. Misunderstood the question. Yes, I ran make dtbs_check and
got these messages. But couldn't relate them with the
minItems/maxItems mismatch...

	phy@...00: clocks: [[8, 93], [8, 102]] is too short
	phy@...00: clock-names: ['aux', 'cfg_ahb'] is too short

Will fix it now. Thanks for the clarification.

> > We only have 2 items. Is it ok change the minItems to 2?
>
> Yes, because you must update top level (and maybe other) constraints to
> correct ones. Just test the code...

Ok.

Thanks
Varada

>
>
> Best regards,
> Krzysztof
>