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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interconnect/qcom,msm8998-bwmon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Interconnect Bandwidth Monitor
+
+maintainers:
+ - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+
+description: |
+ Bandwidth Monitor measures current throughput on buses between various NoC
+ fabrics and provides information when it crosses configured thresholds.
+
+ Certain SoCs might have more than one Bandwidth Monitors, for example on SDM845::
+ - Measuring the bandwidth between CPUs and Last Level Cache Controller -
+ called just BWMON,
+ - Measuring the bandwidth between Last Level Cache Controller and memory
+ (DDR) - called LLCC BWMON.
+
+properties:
+ compatible:
+ oneOf:
+ - const: qcom,msm8998-bwmon # BWMON v4
+ - items:
+ - enum:
+ - qcom,qcm2290-cpu-bwmon
+ - qcom,sc7180-cpu-bwmon
+ - qcom,sc7280-cpu-bwmon
+ - qcom,sc8280xp-cpu-bwmon
+ - qcom,sdm845-cpu-bwmon
+ - qcom,sm6115-cpu-bwmon
+ - qcom,sm6350-llcc-bwmon
+ - qcom,sm8250-cpu-bwmon
+ - qcom,sm8550-cpu-bwmon
+ - qcom,sm8650-cpu-bwmon
+ - const: qcom,sdm845-bwmon # BWMON v4, unified register space
+ - items:
+ - enum:
+ - qcom,sc7180-llcc-bwmon
+ - qcom,sc8280xp-llcc-bwmon
+ - qcom,sm6350-cpu-bwmon
+ - qcom,sm8250-llcc-bwmon
+ - qcom,sm8550-llcc-bwmon
+ - qcom,sm8650-llcc-bwmon
+ - const: qcom,sc7280-llcc-bwmon
+ - const: qcom,sc7280-llcc-bwmon # BWMON v5
+ - const: qcom,sdm845-llcc-bwmon # BWMON v5
+
+ interconnects:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ operating-points-v2: true
+ opp-table:
+ type: object
+
+ reg:
+ # BWMON v5 uses one register address space, v1-v4 use one or two.
+ minItems: 1
+ maxItems: 2
+
+ reg-names:
+ minItems: 1
+ maxItems: 2
+
+required:
+ - compatible
+ - interconnects
+ - interrupts
+ - operating-points-v2
+ - opp-table
+ - reg
+
+additionalProperties: false
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ const: qcom,msm8998-bwmon
+ then:
+ properties:
+ reg:
+ minItems: 2
+
+ reg-names:
+ items:
+ - const: monitor
+ - const: global
+
+ else:
+ properties:
+ reg:
+ maxItems: 1
+
+ reg-names:
+ maxItems: 1
+
+examples:
+ - |
+ #include <dt-bindings/interconnect/qcom,sdm845.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ pmu@1436400 {
+ compatible = "qcom,sdm845-cpu-bwmon", "qcom,sdm845-bwmon";
+ reg = <0x01436400 0x600>;
+ interrupts = <GIC_SPI 581 IRQ_TYPE_LEVEL_HIGH>;
+ interconnects = <&gladiator_noc MASTER_APPSS_PROC 3 &mem_noc SLAVE_LLCC 3>;
+
+ operating-points-v2 = <&cpu_bwmon_opp_table>;
+
+ cpu_bwmon_opp_table: opp-table {
+ compatible = "operating-points-v2";
+ opp-0 {
+ opp-peak-kBps = <4800000>;
+ };
+ opp-1 {
+ opp-peak-kBps = <9216000>;
+ };
+ opp-2 {
+ opp-peak-kBps = <15052800>;
+ };
+ opp-3 {
+ opp-peak-kBps = <20889600>;
+ };
+ opp-4 {
+ opp-peak-kBps = <25497600>;
+ };
+ };
+ };