1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/interconnect/qcom,msm8998-bwmon.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Qualcomm Interconnect Bandwidth Monitor 8 9maintainers: 10 - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> 11 12description: | 13 Bandwidth Monitor measures current throughput on buses between various NoC 14 fabrics and provides information when it crosses configured thresholds. 15 16 Certain SoCs might have more than one Bandwidth Monitors, for example on SDM845:: 17 - Measuring the bandwidth between CPUs and Last Level Cache Controller - 18 called just BWMON, 19 - Measuring the bandwidth between Last Level Cache Controller and memory 20 (DDR) - called LLCC BWMON. 21 22properties: 23 compatible: 24 oneOf: 25 - items: 26 - enum: 27 - qcom,sc7280-bwmon 28 - qcom,sdm845-bwmon 29 - const: qcom,msm8998-bwmon 30 - const: qcom,msm8998-bwmon # BWMON v4 31 - const: qcom,sc7280-llcc-bwmon # BWMON v5 32 - const: qcom,sdm845-llcc-bwmon # BWMON v5 33 34 interconnects: 35 maxItems: 1 36 37 interrupts: 38 maxItems: 1 39 40 operating-points-v2: true 41 opp-table: 42 type: object 43 44 reg: 45 # BWMON v4 (currently described) and BWMON v5 use one register address 46 # space. BWMON v2 uses two register spaces - not yet described. 47 maxItems: 1 48 49required: 50 - compatible 51 - interconnects 52 - interrupts 53 - operating-points-v2 54 - opp-table 55 - reg 56 57additionalProperties: false 58 59examples: 60 - | 61 #include <dt-bindings/interconnect/qcom,sdm845.h> 62 #include <dt-bindings/interrupt-controller/arm-gic.h> 63 64 pmu@1436400 { 65 compatible = "qcom,sdm845-bwmon", "qcom,msm8998-bwmon"; 66 reg = <0x01436400 0x600>; 67 interrupts = <GIC_SPI 581 IRQ_TYPE_LEVEL_HIGH>; 68 interconnects = <&gladiator_noc MASTER_APPSS_PROC 3 &mem_noc SLAVE_LLCC 3>; 69 70 operating-points-v2 = <&cpu_bwmon_opp_table>; 71 72 cpu_bwmon_opp_table: opp-table { 73 compatible = "operating-points-v2"; 74 opp-0 { 75 opp-peak-kBps = <4800000>; 76 }; 77 opp-1 { 78 opp-peak-kBps = <9216000>; 79 }; 80 opp-2 { 81 opp-peak-kBps = <15052800>; 82 }; 83 opp-3 { 84 opp-peak-kBps = <20889600>; 85 }; 86 opp-4 { 87 opp-peak-kBps = <25497600>; 88 }; 89 }; 90 }; 91