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 <[email protected]> 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 - const: qcom,msm8998-bwmon # BWMON v4 26 - items: 27 - enum: 28 - qcom,qcm2290-cpu-bwmon 29 - qcom,qcs615-cpu-bwmon 30 - qcom,qcs8300-cpu-bwmon 31 - qcom,sa8775p-cpu-bwmon 32 - qcom,sc7180-cpu-bwmon 33 - qcom,sc7280-cpu-bwmon 34 - qcom,sc8280xp-cpu-bwmon 35 - qcom,sdm845-cpu-bwmon 36 - qcom,sm6115-cpu-bwmon 37 - qcom,sm6350-llcc-bwmon 38 - qcom,sm8250-cpu-bwmon 39 - qcom,sm8550-cpu-bwmon 40 - qcom,sm8650-cpu-bwmon 41 - qcom,sm8750-cpu-bwmon 42 - qcom,x1e80100-cpu-bwmon 43 - const: qcom,sdm845-bwmon # BWMON v4, unified register space 44 - items: 45 - enum: 46 - qcom,qcs615-llcc-bwmon 47 - qcom,qcs8300-llcc-bwmon 48 - qcom,sa8775p-llcc-bwmon 49 - qcom,sc7180-llcc-bwmon 50 - qcom,sc8280xp-llcc-bwmon 51 - qcom,sm6350-cpu-bwmon 52 - qcom,sm8250-llcc-bwmon 53 - qcom,sm8550-llcc-bwmon 54 - qcom,sm8650-llcc-bwmon 55 - qcom,x1e80100-llcc-bwmon 56 - const: qcom,sc7280-llcc-bwmon 57 - const: qcom,sc7280-llcc-bwmon # BWMON v5 58 - const: qcom,sdm845-llcc-bwmon # BWMON v5 59 60 interconnects: 61 maxItems: 1 62 63 interrupts: 64 maxItems: 1 65 66 operating-points-v2: true 67 opp-table: 68 type: object 69 70 reg: 71 # BWMON v5 uses one register address space, v1-v4 use one or two. 72 minItems: 1 73 maxItems: 2 74 75 reg-names: 76 minItems: 1 77 maxItems: 2 78 79required: 80 - compatible 81 - interconnects 82 - interrupts 83 - operating-points-v2 84 - reg 85 86additionalProperties: false 87 88allOf: 89 - if: 90 properties: 91 compatible: 92 const: qcom,msm8998-bwmon 93 then: 94 properties: 95 reg: 96 minItems: 2 97 98 reg-names: 99 items: 100 - const: monitor 101 - const: global 102 103 else: 104 properties: 105 reg: 106 maxItems: 1 107 108 reg-names: 109 maxItems: 1 110 111examples: 112 - | 113 #include <dt-bindings/interconnect/qcom,sdm845.h> 114 #include <dt-bindings/interrupt-controller/arm-gic.h> 115 116 pmu@1436400 { 117 compatible = "qcom,sdm845-cpu-bwmon", "qcom,sdm845-bwmon"; 118 reg = <0x01436400 0x600>; 119 interrupts = <GIC_SPI 581 IRQ_TYPE_LEVEL_HIGH>; 120 interconnects = <&gladiator_noc MASTER_APPSS_PROC 3 &mem_noc SLAVE_LLCC 3>; 121 122 operating-points-v2 = <&cpu_bwmon_opp_table>; 123 124 cpu_bwmon_opp_table: opp-table { 125 compatible = "operating-points-v2"; 126 opp-0 { 127 opp-peak-kBps = <4800000>; 128 }; 129 opp-1 { 130 opp-peak-kBps = <9216000>; 131 }; 132 opp-2 { 133 opp-peak-kBps = <15052800>; 134 }; 135 opp-3 { 136 opp-peak-kBps = <20889600>; 137 }; 138 opp-4 { 139 opp-peak-kBps = <25497600>; 140 }; 141 }; 142 }; 143