linux-kernel - Re: [PATCH 12/14] arm64: dts: qcom: Add rpm-proc node for GLINK gplatforms

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Date:   Mon, 5 Jun 2023 21:55:25 +0200
From:   Stephan Gerhold <stephan@...hold.net>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-remoteproc@...r.kernel.org
Subject: Re: [PATCH 12/14] arm64: dts: qcom: Add rpm-proc node for GLINK
 gplatforms

On Mon, Jun 05, 2023 at 09:43:50PM +0200, Konrad Dybcio wrote:
> On 5.06.2023 09:08, Stephan Gerhold wrote:
> > Rather than having the RPM GLINK channels as the only child of a dummy
> > top-level rpm-glink node, switch to representing the RPM as remoteproc
> > like all the other remoteprocs (modem DSP, ...).
> > 
> > This allows assigning additional subdevices to it like the MPM
> > interrupt-controller or rpm-master-stats.
> > 
> > Signed-off-by: Stephan Gerhold <stephan@...hold.net>
> > ---
> >  arch/arm64/boot/dts/qcom/ipq6018.dtsi |  48 ++++++-----
> >  arch/arm64/boot/dts/qcom/ipq9574.dtsi |  28 ++++---
> >  arch/arm64/boot/dts/qcom/msm8996.dtsi | 113 ++++++++++++-------------
> >  arch/arm64/boot/dts/qcom/msm8998.dtsi |  98 +++++++++++-----------
> >  arch/arm64/boot/dts/qcom/qcm2290.dtsi | 126 ++++++++++++++--------------
> >  arch/arm64/boot/dts/qcom/qcs404.dtsi  | 152 +++++++++++++++++-----------------
> >  arch/arm64/boot/dts/qcom/sdm630.dtsi  | 132 +++++++++++++++--------------
> >  arch/arm64/boot/dts/qcom/sm6115.dtsi  | 128 ++++++++++++++--------------
> >  arch/arm64/boot/dts/qcom/sm6125.dtsi  | 140 ++++++++++++++++---------------
> >  arch/arm64/boot/dts/qcom/sm6375.dtsi  | 126 ++++++++++++++--------------
> >  10 files changed, 564 insertions(+), 527 deletions(-)
> > 
> > diff --git a/arch/arm64/boot/dts/qcom/ipq6018.dtsi b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
> > index 7355f266742a..fff4a4014bd8 100644
> > --- a/arch/arm64/boot/dts/qcom/ipq6018.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
> > @@ -146,6 +146,32 @@ psci: psci {
> >  		method = "smc";
> >  	};
> >  
> > +	rpm: remoteproc-rpm {
> Krzysztof, is this fine or should this be just `remoteproc {`?
> 

What if you have multiple remoteprocs? I took this naming convention
from sdm845.dtsi by the way:

	adsp_pas: remoteproc-adsp {
		compatible = "qcom,sdm845-adsp-pas";
	cdsp_pas: remoteproc-cdsp {
		compatible = "qcom,sdm845-cdsp-pas";

Thanks,
Stephan