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dt-bindings: display: msm: Convert GMU bindings to YAML
Convert display/msm/gmu.txt to display/msm/gmu.yaml and remove the old text bindings. The 'sram' text from the old binding never applied to the GMU so it was not converted but all the other properties were correct. Acked-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
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Jordan Crouse
Rob Clark
parent
00d9220ec5
commit
a168b512de
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Qualcomm adreno/snapdragon GMU (Graphics management unit)
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The GMU is a programmable power controller for the GPU. the CPU controls the
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GMU which in turn handles power controls for the GPU.
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Required properties:
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- compatible: "qcom,adreno-gmu-XYZ.W", "qcom,adreno-gmu"
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for example: "qcom,adreno-gmu-630.2", "qcom,adreno-gmu"
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Note that you need to list the less specific "qcom,adreno-gmu"
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for generic matches and the more specific identifier to identify
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the specific device.
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- reg: Physical base address and length of the GMU registers.
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- reg-names: Matching names for the register regions
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* "gmu"
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* "gmu_pdc"
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* "gmu_pdc_seg"
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- interrupts: The interrupt signals from the GMU.
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- interrupt-names: Matching names for the interrupts
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* "hfi"
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* "gmu"
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- clocks: phandles to the device clocks
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- clock-names: Matching names for the clocks
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* "gmu"
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* "cxo"
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* "axi"
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* "mnoc"
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- power-domains: should be:
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<&clock_gpucc GPU_CX_GDSC>
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<&clock_gpucc GPU_GX_GDSC>
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- power-domain-names: Matching names for the power domains
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- iommus: phandle to the adreno iommu
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- operating-points-v2: phandle to the OPP operating points
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Example:
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/ {
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...
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gmu: gmu@506a000 {
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compatible="qcom,adreno-gmu-630.2", "qcom,adreno-gmu";
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reg = <0x506a000 0x30000>,
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<0xb280000 0x10000>,
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<0xb480000 0x10000>;
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reg-names = "gmu", "gmu_pdc", "gmu_pdc_seq";
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interrupts = <GIC_SPI 304 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "hfi", "gmu";
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clocks = <&gpucc GPU_CC_CX_GMU_CLK>,
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<&gpucc GPU_CC_CXO_CLK>,
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<&gcc GCC_DDRSS_GPU_AXI_CLK>,
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<&gcc GCC_GPU_MEMNOC_GFX_CLK>;
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clock-names = "gmu", "cxo", "axi", "memnoc";
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power-domains = <&gpucc GPU_CX_GDSC>,
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<&gpucc GPU_GX_GDSC>;
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power-domain-names = "cx", "gx";
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iommus = <&adreno_smmu 5>;
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operating-points-v2 = <&gmu_opp_table>;
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};
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};
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@ -0,0 +1,123 @@
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# SPDX-License-Identifier: GPL-2.0-only
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# Copyright 2019-2020, The Linux Foundation, All Rights Reserved
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/display/msm/gmu.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Devicetree bindings for the GMU attached to certain Adreno GPUs
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maintainers:
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- Rob Clark <robdclark@gmail.com>
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description: |
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These bindings describe the Graphics Management Unit (GMU) that is attached
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to members of the Adreno A6xx GPU family. The GMU provides on-device power
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management and support to improve power efficiency and reduce the load on
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the CPU.
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properties:
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compatible:
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items:
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- enum:
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- qcom,adreno-gmu-630.2
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- const: qcom,adreno-gmu
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reg:
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items:
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- description: Core GMU registers
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- description: GMU PDC registers
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- description: GMU PDC sequence registers
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reg-names:
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items:
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- const: gmu
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- const: gmu_pdc
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- const: gmu_pdc_seq
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clocks:
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items:
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- description: GMU clock
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- description: GPU CX clock
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- description: GPU AXI clock
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- description: GPU MEMNOC clock
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clock-names:
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items:
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- const: gmu
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- const: cxo
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- const: axi
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- const: memnoc
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interrupts:
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items:
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- description: GMU HFI interrupt
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- description: GMU interrupt
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interrupt-names:
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items:
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- const: hfi
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- const: gmu
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power-domains:
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items:
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- description: CX power domain
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- description: GX power domain
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power-domain-names:
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items:
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- const: cx
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- const: gx
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iommus:
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maxItems: 1
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operating-points-v2: true
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required:
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- compatible
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- reg
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- reg-names
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- clocks
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- clock-names
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- interrupts
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- interrupt-names
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- power-domains
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- power-domain-names
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- iommus
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- operating-points-v2
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examples:
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- |
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#include <dt-bindings/clock/qcom,gpucc-sdm845.h>
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#include <dt-bindings/clock/qcom,gcc-sdm845.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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gmu: gmu@506a000 {
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compatible="qcom,adreno-gmu-630.2", "qcom,adreno-gmu";
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reg = <0x506a000 0x30000>,
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<0xb280000 0x10000>,
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<0xb480000 0x10000>;
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reg-names = "gmu", "gmu_pdc", "gmu_pdc_seq";
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clocks = <&gpucc GPU_CC_CX_GMU_CLK>,
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<&gpucc GPU_CC_CXO_CLK>,
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<&gcc GCC_DDRSS_GPU_AXI_CLK>,
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<&gcc GCC_GPU_MEMNOC_GFX_CLK>;
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clock-names = "gmu", "cxo", "axi", "memnoc";
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interrupts = <GIC_SPI 304 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 305 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "hfi", "gmu";
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power-domains = <&gpucc GPU_CX_GDSC>,
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<&gpucc GPU_GX_GDSC>;
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power-domain-names = "cx", "gx";
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iommus = <&adreno_smmu 5>;
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operating-points-v2 = <&gmu_opp_table>;
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};
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