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[66.90.144.107]) by smtp.gmail.com with ESMTPSA id z7-20020a056870e14700b001842bb0a01csm172819oaa.27.2023.04.12.07.22.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Apr 2023 07:22:32 -0700 (PDT) Received: (nullmailer pid 2309359 invoked by uid 1000); Wed, 12 Apr 2023 14:22:32 -0000 Date: Wed, 12 Apr 2023 09:22:32 -0500 From: Rob Herring To: Konrad Dybcio Cc: Andy Gross , Bjorn Andersson , Krzysztof Kozlowski , Marijn Suijten , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/2] dt-bindings: soc: qcom: Add RPM Master stats Message-ID: <20230412142232.GA2305202-robh@kernel.org> References: <20230405-topic-master_stats-v2-0-51c304ecb610@linaro.org> <20230405-topic-master_stats-v2-1-51c304ecb610@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230405-topic-master_stats-v2-1-51c304ecb610@linaro.org> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Thu, Apr 06, 2023 at 04:49:17PM +0200, Konrad Dybcio wrote: > The RPM MSG RAM contains per-RPM-master (e.g. APPS, ADSP etc.) sleep > statistics. They let one assess which core is actively preventing the > system from entering a true low-power mode. Just curious, is that a debug thing or something the OS uses? > > Signed-off-by: Konrad Dybcio > --- > .../bindings/soc/qcom/rpm-master-stats.yaml | 53 ++++++++++++++++++++++ qcom,rpm-master-stats.yaml > 1 file changed, 53 insertions(+) > > diff --git a/Documentation/devicetree/bindings/soc/qcom/rpm-master-stats.yaml b/Documentation/devicetree/bindings/soc/qcom/rpm-master-stats.yaml > new file mode 100644 > index 000000000000..d2d6a2a39fef > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/qcom/rpm-master-stats.yaml > @@ -0,0 +1,53 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/soc/qcom/rpm-master-stats.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Qualcomm Technologies, Inc. (QTI) RPM Master Stats > + > +maintainers: > + - Konrad Dybcio > + > +description: > + Per-RPM-Master (e.g. APSS, ADSP, etc.) sleep statistics. > + > +properties: > + compatible: > + const: qcom,rpm-master-stats > + > + qcom,rpm-msg-ram: > + $ref: /schemas/types.yaml#/definitions/phandle-array > + description: Phandle to an RPM MSG RAM slice containing the master stats > + minItems: 1 > + maxItems: 5 > + > + qcom,master-names: > + $ref: /schemas/types.yaml#/definitions/string-array > + description: RPM Master name > + minItems: 1 > + maxItems: 5 > + > +required: > + - compatible > + - qcom,rpm-msg-ram > + - qcom,master-names > + > +additionalProperties: false > + > +examples: > + - | > + stats { > + compatible = "qcom,rpm-master-stats"; > + qcom,rpm-msg-ram = <&apss_master_stats>, > + <&mpss_master_stats>, > + <&adsp_master_stats>, > + <&cdsp_master_stats>, > + <&tz_master_stats>; > + qcom,master-names = "APSS", > + "MPSS", > + "ADSP", > + "CDSP", > + "TZ"; > + }; > +... > > -- > 2.40.0 >