linux-kernel - Re: [PATCH v3 04/10] dt-bindings: soc: qcom: Add AOSS QMP binding

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Message-ID: <20190122192537.GC31919@minitux>
Date:   Tue, 22 Jan 2019 11:25:37 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 04/10] dt-bindings: soc: qcom: Add AOSS QMP binding

On Tue 22 Jan 11:04 PST 2019, Stephen Boyd wrote:

> Quoting Bjorn Andersson (2019-01-21 21:51:06)
> > Add binding for the QMP based side-channel communication mechanism to
> > the AOSS, which is used to control resources not exposed through the
> > RPMh interface.
> > 
> > Reviewed-by: Rob Herring <robh@...nel.org>
> > Reviewed-by: Stephen Boyd <swboyd@...omium.org>
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> > ---
> > 
> > Changes since v2:
> > - Update indentation of example
> > - Add colling device subnodes to the description
> > 
> >  .../bindings/soc/qcom/qcom,aoss-qmp.txt       | 75 +++++++++++++++++++
> >  include/dt-bindings/power/qcom-aoss-qmp.h     | 15 ++++
> >  2 files changed, 90 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
> >  create mode 100644 include/dt-bindings/power/qcom-aoss-qmp.h
> > 
> > diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
> > new file mode 100644
> > index 000000000000..881dc8c7907a
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,aoss-qmp.txt
> > @@ -0,0 +1,75 @@
> > +Qualcomm Always-On Subsystem side channel binding
> > +
> > +This binding describes the hardware component responsible for side channel
> > +requests to the always-on subsystem (AOSS), used for certain power management
> > +requests that is not handled by the standard RPMh interface. Each client in the
> > +SoC has it's own block of message RAM and IRQ for communication with the AOSS.
> > +The protocol used to communicate in the message RAM is known as QMP.
> 
> Just curious if QMP is "Qualcomm Messaging Protocol"? I don't think it's
> ever spelled out in this patchset.
> 

I believe that is the case, would you like me to spell it out?