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

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Message-ID: <20230424052408.GA21232@varda-linux.qualcomm.com>
Date:   Mon, 24 Apr 2023 10:54:09 +0530
From:   Varadarajan Narayanan <quic_varada@...cinc.com>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <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 Fri, Apr 21, 2023 at 05:19:58PM +0300, Dmitry Baryshkov wrote:
> On 21/04/2023 13:13, Varadarajan Narayanan wrote:
> >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'.
>
> This should be a part of the commit message, so that the next developer
> understands your intentions without going to mail archives.

Thanks for the feedback. Have posted v9 that includes the above
in commit message.

https://lore.kernel.org/lkml/b00042df41420ac337703ca99ac7876c46552946.1682092324.git.quic_varada@quicinc.com/

Thanks
Varada

> >>Best regards,
> >>Krzysztof
> >>
>
> --
> With best wishes
> Dmitry
>