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Date:   Wed, 10 May 2023 10:34:39 +0200
Message-Id: <CSIGK60CQSD8.1Q4SOANJRMASF@otso>
Cc:     "Andy Gross" <agross@kernel.org>,
        "Bjorn Andersson" <andersson@kernel.org>,
        "Konrad Dybcio" <konrad.dybcio@linaro.org>,
        "Rob Herring" <robh+dt@kernel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
        "Konrad Dybcio" <konrad.dybcio@somainline.org>,
        <~postmarketos/upstreaming@lists.sr.ht>,
        <phone-devel@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] arm64: dts: qcom: pm7250b: make SID configurable
From:   "Luca Weiss" <luca.weiss@fairphone.com>
To:     "Dmitry Baryshkov" <dmitry.baryshkov@linaro.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski@linaro.org>
References: <20230407-pm7250b-sid-v1-0-fc648478cc25@fairphone.com>
 <20230407-pm7250b-sid-v1-2-fc648478cc25@fairphone.com>
 <f52524da-719b-790f-ad2c-0c3f313d9fe9@linaro.org>
 <CSIE9TYTQUHL.3E769C2Y4RAAO@otso>
 <c9eea8ec-b289-334c-9c0b-7c992184a265@linaro.org>
 <CAA8EJpoSpytSTm=y7oPD_SC+0-bd735KEczR1JgMc7RuMZ+A+g@mail.gmail.com>
In-Reply-To: <CAA8EJpoSpytSTm=y7oPD_SC+0-bd735KEczR1JgMc7RuMZ+A+g@mail.gmail.com>
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On Wed May 10, 2023 at 10:07 AM CEST, Dmitry Baryshkov wrote:
> On Wed, 10 May 2023 at 09:55, Krzysztof Kozlowski
> <krzysztof.kozlowski@linaro.org> wrote:
> >
> > On 10/05/2023 08:47, Luca Weiss wrote:
> > > Hi Krzysztof,
> > >
> > > On Fri Apr 7, 2023 at 10:27 AM CEST, Krzysztof Kozlowski wrote:
> > >> On 07/04/2023 09:45, Luca Weiss wrote:
> > >>> Like other Qualcomm PMICs the PM7250B can be used on different addr=
esses
> > >>> on the SPMI bus. Use similar defines like the PMK8350 to make this
> > >>> possible.
> > >>>
> > >>> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
> > >>> ---
> > >>>  arch/arm64/boot/dts/qcom/pm7250b.dtsi | 23 ++++++++++++++++-------
> > >>>  1 file changed, 16 insertions(+), 7 deletions(-)
> > >>>
> > >>> diff --git a/arch/arm64/boot/dts/qcom/pm7250b.dtsi b/arch/arm64/boo=
t/dts/qcom/pm7250b.dtsi
> > >>> index daa6f1d30efa..eeb476edc79a 100644
> > >>> --- a/arch/arm64/boot/dts/qcom/pm7250b.dtsi
> > >>> +++ b/arch/arm64/boot/dts/qcom/pm7250b.dtsi
> > >>> @@ -7,6 +7,15 @@
> > >>>  #include <dt-bindings/interrupt-controller/irq.h>
> > >>>  #include <dt-bindings/spmi/spmi.h>
> > >>>
> > >>> +/* This PMIC can be configured to be at different SIDs */
> > >>> +#ifndef PM7250B_SID
> > >>> +   #define PM7250B_SID 2
> > >>
> > >> Drop indentation, although anyway I am against this. Please don't br=
ing
> > >> new patterns of this at least till we settle previous discussion.
> > >>
> > >> https://lore.kernel.org/linux-arm-msm/46658cbb-fff5-e98b-fdad-88fa68=
3a9c75@linaro.org/
> > >
> > > What's the outcome of the discussion? For this PMIC it's totally enou=
gh
> > > to have the SID configurable like in this patch, I don't think this P=
MIC
> > > will be included twice in a board - at least I'm not aware of such a
> > > configuration.
> >
> > We did not reach consensus and I still disagree with complex macros or
> > macros depending on order of inclusion.
>
> I still think we should find a way to parametrise PMIC dtsi, however I
> agree with Krzysztof that complex CPP is not a way to go.

What about the macro already used in-tree and proposed with this patch?
I wouldn't say this is a "complex macro" since it's just a single number
being replaced in a few places.

Could we get this in now, and if we find a new & better way in the
future we can adjust all the dtsi upstream?