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Date:   Fri, 5 May 2023 15:48:01 +0530
From:   Varadarajan Narayanan <quic_varada@quicinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
CC:     <agross@kernel.org>, <andersson@kernel.org>,
        <konrad.dybcio@linaro.org>, <amitk@kernel.org>,
        <thara.gopinath@gmail.com>, <rafael@kernel.org>,
        <daniel.lezcano@linaro.org>, <rui.zhang@intel.com>,
        <robh+dt@kernel.org>, <krzysztof.kozlowski+dt@linaro.org>,
        <linux-arm-msm@vger.kernel.org>, <linux-pm@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        Praveenkumar I <quic_ipkumar@quicinc.com>
Subject: Re: [PATCH 1/4] dt-bindings: thermal: tsens: Add ipq9574 compatible
Message-ID: <20230505101800.GA10918@varda-linux.qualcomm.com>
References: <cover.1682682753.git.quic_varada@quicinc.com>
 <3c6f7510d175ba5a3c81730b010f6c421b2fbf2d.1682682753.git.quic_varada@quicinc.com>
 <16443d11-7948-d224-cfef-b6c1b5c3d60d@linaro.org>
 <20230503071055.GB1087@varda-linux.qualcomm.com>
 <915eea5b-6cef-d346-7cbd-b679726113ad@linaro.org>
 <20230504045757.GA13434@varda-linux.qualcomm.com>
 <1b449a78-b57e-7e1e-0261-d35a5a2582a6@linaro.org>
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On Thu, May 04, 2023 at 08:22:44AM +0200, Krzysztof Kozlowski wrote:
> On 04/05/2023 06:57, Varadarajan Narayanan wrote:
> > On Wed, May 03, 2023 at 09:42:28AM +0200, Krzysztof Kozlowski wrote:
> >> On 03/05/2023 09:10, Varadarajan Narayanan wrote:
> >>> On Mon, May 01, 2023 at 09:08:49AM +0200, Krzysztof Kozlowski wrote:
> >>>> On 28/04/2023 16:52, Varadarajan Narayanan wrote:
> >>>>> From: Praveenkumar I <quic_ipkumar@quicinc.com>
> >>>>>
> >>>>> Qualcomm IPQ9574 has tsens v2.3.1 block, which is similar to IPQ8074 tsens.
> >>>>>
> >>>>> Signed-off-by: Praveenkumar I <quic_ipkumar@quicinc.com>
> >>>>> Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
> >>>>> ---
> >>>>>  Documentation/devicetree/bindings/thermal/qcom-tsens.yaml | 3 +++
> >>>>>  1 file changed, 3 insertions(+)
> >>>>>
> >>>>> diff --git a/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml b/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
> >>>>> index d1ec963..8e2208c 100644
> >>>>> --- a/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
> >>>>> +++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
> >>>>> @@ -66,6 +66,7 @@ properties:
> >>>>>        - description: v2 of TSENS with combined interrupt
> >>>>>          enum:
> >>>>>            - qcom,ipq8074-tsens
> >>>>> +          - qcom,ipq9574-tsens
> >>>>
> >>>> Your drive change indicates they are compatible, so make them
> >>>> compatible. 9574 followed by 8074.
> >>>
> >>> Not able to understand. You want IPQ9574 to use "qcom,ipq8074-tsens"
> >>> instead of adding a "qcom,ipq9574-tsens" and no need to add an extra
> >>> entry to the driver like
> >>
> >> Assuming the devices are really compatible, which your driver change
> >> suggests, I want to use two compatibles. 9574 followed by 8074 fallback,
> >> just like we do for all Qualcomm IP blocks. Then as you said - no need
> >> for driver change.
> >
> > With schema like this
> > 	items:
> > 	  - enum:
> > 	      - qcom,ipq8074-tsens
> > 	      - qcom,ipq9574-tsens
> > and DTS as
> > 	compatible = "qcom,ipq9574-tsens", "qcom,ipq8074-tsens";
>
> This file (and many others) shows you how to encode it in the DT schema
>
> https://elixir.bootlin.com/linux/v6.3-rc6/source/Documentation/devicetree/bindings/sound/nvidia,tegra210-ope.yaml#L31

Thanks for the pointer.
Will rework and post.

-Varada

> > 'make dtbs_check' gives the following error
> >
> > arch/arm64/boot/dts/qcom/ipq9574-rdp433.dtb: thermal-sensor@4a9000: compatible: 'oneOf' conditional failed, one must be fixed:
> >         ['qcom,ipq9574-tsens', 'qcom,ipq8074-tsens'] is too long
> >
> > To fix the above error, I have to change the schema as
> >
> > 	items:
> > 	  - enum:
> > 	      - qcom,ipq8074-tsens
> > 	      - qcom,ipq9574-tsens
> > 	  - const: qcom,tsens-v2-combined-int
>
> This is not what we talked about.
>
> Best regards,
> Krzysztof
>