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| 1 | +# SPDX-License-Identifier: GPL-2.0-only |
| 2 | +# Copyright 2019-2020, The Linux Foundation, All Rights Reserved |
| 3 | +%YAML 1.2 |
| 4 | +--- |
| 5 | + |
| 6 | +$id: "http://devicetree.org/schemas/display/msm/gmu.yaml#" |
| 7 | +$schema: "http://devicetree.org/meta-schemas/core.yaml#" |
| 8 | + |
| 9 | +title: Devicetree bindings for the GMU attached to certain Adreno GPUs |
| 10 | + |
| 11 | +maintainers: |
| 12 | + |
| 13 | + |
| 14 | +description: | |
| 15 | + These bindings describe the Graphics Management Unit (GMU) that is attached |
| 16 | + to members of the Adreno A6xx GPU family. The GMU provides on-device power |
| 17 | + management and support to improve power efficiency and reduce the load on |
| 18 | + the CPU. |
| 19 | +
|
| 20 | +properties: |
| 21 | + compatible: |
| 22 | + items: |
| 23 | + - enum: |
| 24 | + - qcom,adreno-gmu-630.2 |
| 25 | + - const: qcom,adreno-gmu |
| 26 | + |
| 27 | + reg: |
| 28 | + items: |
| 29 | + - description: Core GMU registers |
| 30 | + - description: GMU PDC registers |
| 31 | + - description: GMU PDC sequence registers |
| 32 | + |
| 33 | + reg-names: |
| 34 | + items: |
| 35 | + - const: gmu |
| 36 | + - const: gmu_pdc |
| 37 | + - const: gmu_pdc_seq |
| 38 | + |
| 39 | + clocks: |
| 40 | + items: |
| 41 | + - description: GMU clock |
| 42 | + - description: GPU CX clock |
| 43 | + - description: GPU AXI clock |
| 44 | + - description: GPU MEMNOC clock |
| 45 | + |
| 46 | + clock-names: |
| 47 | + items: |
| 48 | + - const: gmu |
| 49 | + - const: cxo |
| 50 | + - const: axi |
| 51 | + - const: memnoc |
| 52 | + |
| 53 | + interrupts: |
| 54 | + items: |
| 55 | + - description: GMU HFI interrupt |
| 56 | + - description: GMU interrupt |
| 57 | + |
| 58 | + |
| 59 | + interrupt-names: |
| 60 | + items: |
| 61 | + - const: hfi |
| 62 | + - const: gmu |
| 63 | + |
| 64 | + power-domains: |
| 65 | + items: |
| 66 | + - description: CX power domain |
| 67 | + - description: GX power domain |
| 68 | + |
| 69 | + power-domain-names: |
| 70 | + items: |
| 71 | + - const: cx |
| 72 | + - const: gx |
| 73 | + |
| 74 | + iommus: |
| 75 | + maxItems: 1 |
| 76 | + |
| 77 | + operating-points-v2: true |
| 78 | + |
| 79 | +required: |
| 80 | + - compatible |
| 81 | + - reg |
| 82 | + - reg-names |
| 83 | + - clocks |
| 84 | + - clock-names |
| 85 | + - interrupts |
| 86 | + - interrupt-names |
| 87 | + - power-domains |
| 88 | + - power-domain-names |
| 89 | + - iommus |
| 90 | + - operating-points-v2 |
| 91 | + |
| 92 | +examples: |
| 93 | + - | |
| 94 | + #include <dt-bindings/clock/qcom,gpucc-sdm845.h> |
| 95 | + #include <dt-bindings/clock/qcom,gcc-sdm845.h> |
| 96 | + #include <dt-bindings/interrupt-controller/irq.h> |
| 97 | + #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 98 | +
|
| 99 | + gmu: gmu@506a000 { |
| 100 | + compatible="qcom,adreno-gmu-630.2", "qcom,adreno-gmu"; |
| 101 | +
|
| 102 | + reg = <0x506a000 0x30000>, |
| 103 | + <0xb280000 0x10000>, |
| 104 | + <0xb480000 0x10000>; |
| 105 | + reg-names = "gmu", "gmu_pdc", "gmu_pdc_seq"; |
| 106 | +
|
| 107 | + clocks = <&gpucc GPU_CC_CX_GMU_CLK>, |
| 108 | + <&gpucc GPU_CC_CXO_CLK>, |
| 109 | + <&gcc GCC_DDRSS_GPU_AXI_CLK>, |
| 110 | + <&gcc GCC_GPU_MEMNOC_GFX_CLK>; |
| 111 | + clock-names = "gmu", "cxo", "axi", "memnoc"; |
| 112 | +
|
| 113 | + interrupts = <GIC_SPI 304 IRQ_TYPE_LEVEL_HIGH>, |
| 114 | + <GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>; |
| 115 | + interrupt-names = "hfi", "gmu"; |
| 116 | +
|
| 117 | + power-domains = <&gpucc GPU_CX_GDSC>, |
| 118 | + <&gpucc GPU_GX_GDSC>; |
| 119 | + power-domain-names = "cx", "gx"; |
| 120 | +
|
| 121 | + iommus = <&adreno_smmu 5>; |
| 122 | + operating-points-v2 = <&gmu_opp_table>; |
| 123 | + }; |
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