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. Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> --- .../bindings/soc/qcom/rpm-master-stats.yaml | 53 ++++++++++++++++++++++ 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..e8e71e75d161 --- /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 <konrad.dybcio@xxxxxxxxxx> + +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
