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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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fa78d0280f
The stats can be expanded by poking the Always-On Subsystem through QMP. Allow passing a QMP handle for configurations that support it. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20231130-topic-ddr_sleep_stats-v1-1-5981c2e764b6@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
68 lines
1.6 KiB
YAML
68 lines
1.6 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/soc/qcom/qcom-stats.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm Technologies, Inc. (QTI) Stats
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maintainers:
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- Maulik Shah <quic_mkshah@quicinc.com>
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description:
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Always On Processor/Resource Power Manager maintains statistics of the SoC
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sleep modes involving powering down of the rails and oscillator clock.
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Statistics includes SoC sleep mode type, number of times low power mode were
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entered, time of last entry, time of last exit and accumulated sleep duration.
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properties:
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compatible:
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enum:
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- qcom,rpmh-stats
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- qcom,sdm845-rpmh-stats
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- qcom,rpm-stats
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# For older RPM firmware versions with fixed offset for the sleep stats
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- qcom,apq8084-rpm-stats
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- qcom,msm8226-rpm-stats
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- qcom,msm8916-rpm-stats
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- qcom,msm8974-rpm-stats
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reg:
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maxItems: 1
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qcom,qmp:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: Reference to the AOSS side-channel message RAM
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required:
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- compatible
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- reg
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allOf:
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- if:
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not:
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properties:
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compatible:
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const: qcom,rpmh-stats
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then:
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properties:
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qcom,qmp: false
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additionalProperties: false
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examples:
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# Example of rpmh sleep stats
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- |
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sram@c3f0000 {
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compatible = "qcom,rpmh-stats";
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reg = <0x0c3f0000 0x400>;
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};
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# Example of rpm sleep stats
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- |
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sram@4690000 {
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compatible = "qcom,rpm-stats";
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reg = <0x04690000 0x10000>;
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};
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...
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