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

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Message-ID: <154818385792.20280.7601798748317142776@swboyd.mtv.corp.google.com>
Date:   Tue, 22 Jan 2019 11:04:17 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Andy Gross <andy.gross@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Sibi Sankar <sibis@...eaurora.org>
Cc:     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

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.