The power domains exposed by the AOSS QMP driver control the load state resources linked to modem, adsp, cdsp remoteprocs. These are used to notify the Always on Subsystem (AOSS) that a particular co-processor is up/down. AOSS uses this information to wait for the co-processors to suspend before starting its sleep sequence. These co-processors enter low-power modes independent to that of the application processor and the load state resources linked to them are expected to remain unaltered across system suspend/resume cycles. To achieve this behavior let's stop modeling them as power-domains and replace them with generic qmp_send interface instead. https://lore.kernel.org/lkml/20200913034603.GV3715@yoga/ Previous discussion on dropping power-domain support from AOSS QMP driver Depends on: qmp_send: https://patchwork.kernel.org/project/linux-arm-msm/cover/1630420228-31075-1-git-send-email-deesin@xxxxxxxxxxxxxx/ V7: * Set "qcom,qmp" property to false for unsupported devices (patch 2). [Rob] * Let's not miss adding qcom,qmp to ADSP/CDSP on SDM845 SoC. V6: * Updated commit message to explain binding breakage (patch 2). [Stephen] V5: * Fixup power-domain count (patch 2). [Matthias] * Add WARN_ON on truncation, remove redundant initialization code, use dev_err_probe (patch 4). [Stephen] * Use devm_kstrdup, handle kstrdup failure due to no memory and set qmp to NULL when not available (patch 4). [Bjorn] V4: * Rebase patch 1 due to the aoss-qmp yaml conversion (Dropping Rb). * Commit message change and sc8180x co-processor addition to patch 2. [Rob/Bjorn] * Drop unused pdev and kfree the load state string in q6v5_deinit /probe path for patch 4. [Matthias] * Replaced "binding" with "property" across the series. [Matthias] * Commit message change and drop incorrect cleanup on cooling device probe failures. [Matthias] V3: * Misc. documentation fixes [patch 2]: - Reduce power-domain maxItems due to load_state pd removal - Combine compatibles where possible with the load_state pd removal - Fixup the qcom,qmp ref to phandle type V2: * load_state is currently broken on mainline so be safely dropped without side-effects. * Rebased on top of qmp_send v3 series. * Dropped R-b from Stephen and Rob on patch 3 due to the yaml conversion. * New patch [12] to drop unused aoss-qmp header. * Commit message update [patch 1] [Rob] * Reorder the series [Stephen] Sibi Sankar (13): dt-bindings: soc: qcom: aoss: Drop the load state power-domain dt-bindings: remoteproc: qcom: pas: Add QMP property dt-bindings: remoteproc: qcom: Add QMP property remoteproc: qcom: q6v5: Use qmp_send to update co-processor load state arm64: dts: qcom: sc7180: Use QMP property to control load state arm64: dts: qcom: sc7280: Use QMP property to control load state arm64: dts: qcom: sdm845: Use QMP property to control load state arm64: dts: qcom: sm8150: Use QMP property to control load state arm64: dts: qcom: sm8250: Use QMP property to control load state arm64: dts: qcom: sm8350: Use QMP property to control load state soc: qcom: aoss: Drop power domain support dt-bindings: msm/dp: Remove aoss-qmp header dt-bindings: soc: qcom: aoss: Delete unused power-domain definitions .../bindings/display/msm/dp-controller.yaml | 1 - .../devicetree/bindings/remoteproc/qcom,adsp.yaml | 54 +++++----- .../devicetree/bindings/remoteproc/qcom,q6v5.txt | 7 +- .../bindings/soc/qcom/qcom,aoss-qmp.yaml | 11 +- arch/arm64/boot/dts/qcom/sc7180.dtsi | 9 +- arch/arm64/boot/dts/qcom/sc7280.dtsi | 2 - arch/arm64/boot/dts/qcom/sdm845.dtsi | 12 ++- arch/arm64/boot/dts/qcom/sm8150.dtsi | 28 ++--- arch/arm64/boot/dts/qcom/sm8250.dtsi | 22 ++-- arch/arm64/boot/dts/qcom/sm8350.dtsi | 30 +++--- drivers/remoteproc/qcom_q6v5.c | 57 ++++++++++- drivers/remoteproc/qcom_q6v5.h | 7 +- drivers/remoteproc/qcom_q6v5_adsp.c | 7 +- drivers/remoteproc/qcom_q6v5_mss.c | 44 ++------ drivers/remoteproc/qcom_q6v5_pas.c | 113 ++++++++------------- drivers/remoteproc/qcom_q6v5_wcss.c | 4 +- drivers/soc/qcom/qcom_aoss.c | 107 ------------------- include/dt-bindings/power/qcom-aoss-qmp.h | 14 --- 18 files changed, 206 insertions(+), 323 deletions(-) delete mode 100644 include/dt-bindings/power/qcom-aoss-qmp.h -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
